Patents by Inventor Chung-Yang Fang

Chung-Yang Fang 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: 20240045243
    Abstract: The disclosure provides a viewing angle control module including a first liquid crystal panel, a first polarizer, a second polarizer, and a phase retarder. The first liquid crystal panel includes a first substrate, a second substrate, a first alignment layer, a second alignment layer, a first liquid crystal layer, a first electrode layer, and a second electrode layer. A second alignment direction of the second alignment layer is antiparallel to a first alignment direction of the first alignment layer. The first electrode layer has multiple electrode patterns arranged at intervals along a first direction and extending along a second direction. A first absorption axis of the first polarizer is perpendicular to a second absorption axis of the second polarizer. An included angle between the first absorption axis and the first alignment direction is 45 degrees. A display apparatus including the viewing angle control module is also provided.
    Type: Application
    Filed: August 1, 2023
    Publication date: February 8, 2024
    Applicant: Coretronic Corporation
    Inventors: Chung-Yang Fang, Wen-Chun Wang, Bo-Han Cheng
  • Publication number: 20240036429
    Abstract: An electrically controlled optical screen including a switchable scattering element and an electrically controlled decorating module is provided. The switchable scattering element is disposed on a side of the electrically controlled decorating module and is configured to switch between a scattering state and a transparent state. The electrically controlled decorating module includes a first polarizer, a first quarter-wave plate, a cholesteric liquid crystal layer, an electrically controlled wave plate, a second quarter-wave plate and a second polarizer, which are sequentially stacked. The electrically controlled wave plate has a liquid crystal layer. The second polarizer is disposed between the switchable scattering element and the second quarter-wave plate.
    Type: Application
    Filed: June 25, 2023
    Publication date: February 1, 2024
    Applicant: Coretronic Corporation
    Inventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Jing-Yu Wu, Ching-Chuan Wei, Wei-Ting Wu, Tzu-Hung Lin
  • Publication number: 20240027845
    Abstract: An electrically controllable viewing angle switch device is provided with a first substrate, a second substrate, a liquid crystal layer, multiple spacers, and multiple light-shielding patterns. The first substrate and the second substrate are overlapped with each other. The liquid crystal layer and the multiple spacers are disposed between the first substrate and the second substrate. The multiple light-shielding patterns are disposed on the second substrate. The orthographic projection area of each spacer on the second substrate is less than or equal to the orthographic projection area of each light-shielding pattern on the second substrate. The orthographic projection of each spacer on the second substrate is located within the orthographic projection of each light-shielding pattern on the second substrate. A display apparatus using an electrically controllable viewing angle switch device is also provided, in which light leakage near the spacer is extremely slight.
    Type: Application
    Filed: July 12, 2023
    Publication date: January 25, 2024
    Applicant: Coretronic Corporation
    Inventors: Ping-Yen Chen, Ying-Hsiang Chen, Chung-Yang Fang
  • Publication number: 20230408825
    Abstract: A near-eye optical display apparatus includes an optical waveguide, an image beam source, and an electrically controlled liquid crystal cell. The image beam source is disposed on one side of a first light incident surface to provide an image beam. After being transmitted through the optical waveguide, the image beam exits from the light-exit surface. The liquid crystal cell is disposed on one side of a second light incident surface, and has a first sight region and a second sight region disposed in a first direction. When a driving voltage is supplied to the liquid crystal cell, the percentage of an average transmittance of the second sight region for an ambient beam and an average transmittance of the first sight region for the ambient beam is less than or equal to 50%. The display contrast of the near-eye optical display apparatus proposed by the invention is not easily affected by the external environment.
    Type: Application
    Filed: June 7, 2023
    Publication date: December 21, 2023
    Applicant: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang
  • Patent number: 11841585
    Abstract: A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. An included angle between an extending direction of prism structures of each of two optical brightness enhancement films of the backlight module and a viewing angle control direction of the display apparatus is less than 45 degrees.
    Type: Grant
    Filed: February 10, 2023
    Date of Patent: December 12, 2023
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang, Chun-Wei Lee, Jung-Wei Chang
  • Patent number: 11841565
    Abstract: A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. A first absorption axis of the first polarizer disposed between the backlight module and the first electrically-controlled element is perpendicular to a second absorption axis of the second polarizer disposed between the first and second electrically-controlled elements. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: December 12, 2023
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang, Chun-Wei Lee, Jung-Wei Chang
  • Patent number: 11828974
    Abstract: A backlight module includes a light guide plate, a light source, a first optical film, and a second optical film. The light source is disposed on one side of a light incident surface of the light guide plate. The first optical film is disposed between the light guide plate and the second optical film. An illumination beam from the light source has a first polarization component and a second polarization component perpendicular to the first polarization component. A ratio of the first polarization component to the second polarization component is greater than or equal to 1.2 and less than or equal to 10. The second optical film includes a substrate and a plurality of prism structures disposed between the substrate and the light guide plate. An included angle between an extending direction of the prism structures and the light incident surface is less than 5 degrees.
    Type: Grant
    Filed: June 30, 2022
    Date of Patent: November 28, 2023
    Assignee: Coretronic Corporation
    Inventors: Yu-Sung Lai, Chung-Yang Fang, Shih-Wei Liu
  • Patent number: 11796843
    Abstract: A viewing angle control device including a plurality of first polarizing portions and a plurality of transmissive portions is provided. The first polarizing portions are arranged along a first direction and extended in a second direction. The transmissive portions and the first polarizing portions are alternately arranged. Each of the first polarizing portions has a width in the first direction and a height in a direction perpendicular to the first direction and the second direction. A ratio of the height to the width of the first polarizing portion is greater than 1. A display apparatus adopting the viewing angle control device is also provided. The viewing angle control device and the display apparatus provided herein have a filter effect at a large viewing angle, improved light transmittance in the viewing angle direction, and excellent anti-peeping performance.
    Type: Grant
    Filed: August 17, 2020
    Date of Patent: October 24, 2023
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang, Wen-Chun Wang
  • Publication number: 20230305215
    Abstract: A backlight module includes a light guide element including first optical microstructures and second optical microstructures. An angle value of an angle of the first optical microstructures is V1. When the second optical microstructures are respectively recessed into or protrude from a bottom surface, a projection of each sub-optical microstructure on a reference plane has a peak point closest or to farthest from a light emitting surface and a first valley point and a second valley point farthest from or closest to the light emitting surface, a height difference between the peak point and the first valley point or the second valley point is ?H, a length difference between the peak point and the first valley point or the second valley point is ?L, and tan?1(?H/?L) is V2, where V2>0 and V2?0.5·V1.
    Type: Application
    Filed: March 13, 2023
    Publication date: September 28, 2023
    Applicant: Coretronic Corporation
    Inventors: Ying-Hsiang Chen, Cheng-Yi Tseng, Chung-Yang Fang, Ping-Yen Chen
  • Patent number: 11714317
    Abstract: A display apparatus is provided, including at least one viewing angle limiting device, a display panel, and a light polarization converter disposed between the at least one viewing angle limiting device and the display panel. The light polarization converter includes first regions and second regions alternately arranged. Light beams passing through the first regions and the second regions respectively have a first light polarization direction and a second light polarization direction. The light polarization converter is overlapped with the at least one viewing angle limiting device and the display panel. The viewing angle limiting device includes light-absorbing molecules. The light-absorbing molecules have a first absorption coefficient in a thickness direction of the viewing angle limiting device and a second absorption coefficient in a direction perpendicular to the thickness direction. A ratio of the first absorption coefficient to the second absorption coefficient is greater than 1.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: August 1, 2023
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Jen-Wei Yu
  • Patent number: 11709385
    Abstract: An electronically-controlled viewing angle switching device, including a liquid crystal layer, a first electrode, a second electrode, a plurality of first insulation patterns, and a plurality of second insulation patterns is provided. The first electrode and the second electrode are respectively located at a first side and a second side of the liquid crystal layer. The first insulation patterns are located at the first side of the liquid crystal layer. The second insulation patterns are located at the second side of the liquid crystal layer. Each of the first insulation patterns is at least partially overlapped with the corresponding second insulation pattern. A display device adopting the electronically-controlled viewing angle switching device is also provided. The electronically-controlled viewing angle switching device and the display device provide a good anti-peed effect from a side viewing angle.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: July 25, 2023
    Assignee: Coretronic Corporation
    Inventors: Chung-Yang Fang, Ping-Yen Chen, Yang-Ching Lin, Jen-Wei Yu, Yu-Fan Chen
  • Patent number: 11698553
    Abstract: A backlight module including a circuit substrate, a plurality of light-emitting devices, a first cholesteric liquid-crystal layer, and a second cholesteric liquid-crystal layer is provided. The light-emitting devices are disposed on the circuit substrate and electrically connected to the circuit substrate. The first cholesteric liquid-crystal layer is disposed on the light-emitting devices and overlapped with a light-emitting surface of each of the light-emitting devices. The second cholesteric liquid-crystal layer is disposed on the first cholesteric liquid-crystal layer and overlapped with the first cholesteric liquid-crystal layer. The first cholesteric liquid-crystal layer and the second cholesteric liquid-crystal layer respectively have a first chiral direction and a second chiral direction. A display apparatus adopting the backlight module is also provided.
    Type: Grant
    Filed: November 1, 2022
    Date of Patent: July 11, 2023
    Assignee: Coretronic Corporation
    Inventors: Chung-Yang Fang, Ping-Yen Chen, Chih-Jen Tsang, Chung-Wei Huang, Bo-Han Cheng, Wen-Chun Wang
  • Publication number: 20230205008
    Abstract: A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. An included angle between an extending direction of prism structures of each of two optical brightness enhancement films of the backlight module and a viewing angle control direction of the display apparatus is less than 45 degrees.
    Type: Application
    Filed: February 10, 2023
    Publication date: June 29, 2023
    Applicant: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang, Chun-Wei Lee, Jung-Wei Chang
  • Publication number: 20230176405
    Abstract: A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. A first absorption axis of the first polarizer disposed between the backlight module and the first electrically-controlled element is perpendicular to a second absorption axis of the second polarizer disposed between the first and second electrically-controlled elements. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element.
    Type: Application
    Filed: November 4, 2022
    Publication date: June 8, 2023
    Applicant: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang, Chun-Wei Lee, Jung-Wei Chang
  • Publication number: 20230141295
    Abstract: A backlight module including a circuit substrate, a plurality of light-emitting devices, a first cholesteric liquid-crystal layer, and a second cholesteric liquid-crystal layer is provided. The light-emitting devices are disposed on the circuit substrate and electrically connected to the circuit substrate. The first cholesteric liquid-crystal layer is disposed on the light-emitting devices and overlapped with a light-emitting surface of each of the light-emitting devices. The second cholesteric liquid-crystal layer is disposed on the first cholesteric liquid-crystal layer and overlapped with the first cholesteric liquid-crystal layer. The first cholesteric liquid-crystal layer and the second cholesteric liquid-crystal layer respectively have a first chiral direction and a second chiral direction. A display apparatus adopting the backlight module is also provided.
    Type: Application
    Filed: November 1, 2022
    Publication date: May 11, 2023
    Applicant: Coretronic Corporation
    Inventors: Chung-Yang Fang, Ping-Yen Chen, Chih-Jen Tsang, Chung-Wei Huang, Bo-Han Cheng, Wen-Chun Wang
  • Patent number: 11614644
    Abstract: A display device includes a view angle switching module and a display module. The view angle switching module includes a first polarizer and a view angle adjustment layer. The display module and the view angle switching module are overlapped. The display module includes a display layer and a second polarizer. The view angle adjustment layer is located between the first polarizer and the second polarizer. An average degree of polarization of the first polarizer for light with a wavelength falling within a first wavelength band is less than an average degree of polarization of the second polarizer for the light with the wavelength falling within the first wavelength band. The display device may provide a privacy function and images with good image quality.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: March 28, 2023
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang, Yang-Ching Lin
  • Patent number: 11604373
    Abstract: The invention relates to an electrically controllable viewing angle switch device and a display apparatus. The switch device includes a first substrate, a second substrate, a liquid crystal layer, spacers, a first alignment film, a second alignment film, a first polarizer, and a second polarizer and has a light transmission region. The second substrate is disposed opposite to the first substrate. The liquid crystal layer and the spacers are located between the first substrate and the second substrate in the light transmission region. The spacers are fixed on the first or second substrate. The first polarizer and the second polarizer are disposed on opposite sides of the liquid crystal layer. The axial directions of the transmission axis of the first polarizer and the transmission axis of the second polarizer are parallel or perpendicular to the alignment direction of the first alignment film and the second alignment film.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: March 14, 2023
    Assignee: Coretronic Corporation
    Inventors: Yang-Ching Lin, Chung-Yang Fang, Ping-Yen Chen
  • Patent number: 11573438
    Abstract: An electrically controlled viewing angle switching device including a first electrode, a second electrode, a liquid crystal layer, multiple dye molecules, and a polarizer is provided. The second electrode is disposed opposite to the first electrode. The liquid crystal layer is disposed between the first electrode and the second electrode and has an optical axis. The dye molecules are dispersedly disposed in the liquid crystal layer. Each of the dye molecules is arranged corresponding to the optical axis of the liquid crystal layer. The polarizer is stacked on the liquid crystal layer. The axial direction of the optical axis of the liquid crystal layer is perpendicular to the axial direction of the transmission axis of the polarizer. A display device using the electrically controlled viewing angle switching device is also provided.
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: February 7, 2023
    Assignee: Coretronic Corporation
    Inventors: Ping-Yen Chen, Chung-Yang Fang
  • Publication number: 20230003932
    Abstract: A backlight module includes a light guide plate, a light source, a first optical film, and a second optical film. The light source is disposed on one side of a light incident surface of the light guide plate. The first optical film is disposed between the light guide plate and the second optical film. An illumination beam from the light source has a first polarization component and a second polarization component perpendicular to the first polarization component. A ratio of the first polarization component to the second polarization component is greater than or equal to 1.2 and less than or equal to 10. The second optical film includes a substrate and a plurality of prism structures disposed between the substrate and the light guide plate. An included angle between an extending direction of the prism structures and the light incident surface is less than 5 degrees.
    Type: Application
    Filed: June 30, 2022
    Publication date: January 5, 2023
    Applicant: Coretronic Corporation
    Inventors: Yu-Sung Lai, Chung-Yang Fang, Shih-Wei Liu
  • Publication number: 20220397714
    Abstract: Provided is a display apparatus including a circuit substrate, a light-emitting layer, a polarizing layer, a quarter waveplate, and a bandpass polarizing reflective layer. The light-emitting layer includes a plurality of first light-emitting structures. The first light-emitting structures have a first peak emission wavelength. The polarizing layer is located on a side of the light-emitting layer away from the circuit substrate. The quarter waveplate is disposed between the polarizing layer and the light-emitting layer and overlaps the light-emitting layer and the polarizing layer. The bandpass polarizing reflective layer is disposed between the quarter waveplate and the light-emitting layer and includes a first bandpass polarizing reflective pattern overlapping the first light-emitting structures. A reflectance of the bandpass polarizing reflective pattern for light with a wavelength in a first wavelength range is greater than 20%. The first wavelength range is the peak emission wavelength ±10 nm.
    Type: Application
    Filed: May 13, 2022
    Publication date: December 15, 2022
    Applicant: Coretronic Corporation
    Inventors: Ping-Yen Chen, Wen-Chun Wang, Chung-Yang Fang