Patents by Inventor Chung-Yi Chang

Chung-Yi 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: 12339554
    Abstract: A self-powered cholesteric liquid crystal display (ChLCD) device and a method for tracking maximum power are disclosed. The ChLCD device includes a solar cell module, electrical energy for charging, an energy storage device, a charging unit, and a ChLCD module. The method of tracking the maximum power is: supply electrical energy for charging to the charging unit, sense the ambient temperature, and capture the sensed ambient temperature, correspond its value to the voltage value in the comparison data, and adjust the reference driving voltage with a resistor divider, and then electrically charging to the charging unit by the reference driving voltage, so that the charging unit can capture the maximum power of the electrical energy from the solar cell module, and then store the electrical energy in the energy storage device, to refresh the display screen of the ChLCD module and the ChLCD device can effectively utilize electricity.
    Type: Grant
    Filed: December 28, 2023
    Date of Patent: June 24, 2025
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Chung-Yi Chang, Wu-Chang Yang, Chi-Chang Liao
  • Patent number: 12313924
    Abstract: A self-powered display device includes a display module and a power module. The display module is a cholesteric liquid crystal display module, and the power module is a solar cell module. The display module allows light to enter the power module from the front side, and the power module generates electricity upon receiving the light to provide the necessary energy for the display module to show images. The power module has multiple active areas and multiple inactive areas between the active areas. When the width of the inactive area is less than or equal to 50 ?m, the human eye will have difficulty discerning the width of the inactive area. Additionally, a shielding layer can be placed on the inactive area to ensure that the visual color difference (?E) between the inactive area and the active area does not exceed 10 color difference units, thereby improving the image quality.
    Type: Grant
    Filed: October 27, 2023
    Date of Patent: May 27, 2025
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Chung-Yi Chang, Chih-Wei Chen, Chi-Chang Liao
  • Patent number: 12235528
    Abstract: The present invention relates to a cholesteric liquid crystal display device, and a control method. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display module, a solar battery unit, and a control unit. The control unit further includes an ambient energy management module and an energy storage module. The solar battery unit provides electrical energy to the management module. And the ambient energy management module stores electrical energy in the energy storage module. When it is necessary to refresh the images of the cholesteric liquid crystal display module, and the potential difference of the energy storage module reaches the charging cut-off voltage. The energy storage module can discharge the stored electrical energy to provide the electrical energy required by the cholesteric liquid crystal display module to refresh the image.
    Type: Grant
    Filed: July 25, 2023
    Date of Patent: February 25, 2025
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Chung-Yi Chang, Chi-Chang Liao
  • Publication number: 20250060624
    Abstract: A self-powered display device includes a display module and a power module. The display module is a cholesteric liquid crystal display module, and the power module is a solar cell module. The display module allows light to enter the power module from the front side, and the power module generates electricity upon receiving the light to provide the necessary energy for the display module to show images. The power module has multiple active areas and multiple inactive areas between the active areas. When the width of the inactive area is less than or equal to 50 ?m, the human eye will have difficulty discerning the width of the inactive area. Additionally, a shielding layer can be placed on the inactive area to ensure that the visual color difference (?E) between the inactive area and the active area does not exceed 10 color difference units, thereby improving the image quality.
    Type: Application
    Filed: October 27, 2023
    Publication date: February 20, 2025
    Inventors: CHUNG-YI CHANG, CHIH-WEI CHEN, CHI-CHANG LIAO
  • Publication number: 20240411165
    Abstract: The present invention relates to a cholesteric liquid crystal display device, and a control method. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display module, a solar battery unit, and a control unit. The control unit further includes an ambient energy management module and an energy storage module. The solar battery unit provides electrical energy to the management module. And the ambient energy management module stores electrical energy in the energy storage module. When it is necessary to refresh the images of the cholesteric liquid crystal display module, and the potential difference of the energy storage module reaches the charging cut-off voltage. The energy storage module can discharge the stored electrical energy to provide the electrical energy required by the cholesteric liquid crystal display module to refresh the image.
    Type: Application
    Filed: July 25, 2023
    Publication date: December 12, 2024
    Inventors: CHUNG-YI CHANG, CHI-CHANG LIAO
  • Publication number: 20240392194
    Abstract: The disclosed and claimed subject matter relates to a stripping composition having a controlled oxide etch and ITO (Indium Tin oxide) etch as well as sidewall polymer and polymer etch residue removal capability and to a process for stripping and etching utilizing the composition.
    Type: Application
    Filed: September 20, 2022
    Publication date: November 28, 2024
    Inventors: Chung-Yi Chang, Wen Dar Liu, Jhih-Kuei Ge, Yi-Chia Lee, Aiping Wu
  • Patent number: 12110436
    Abstract: The disclosed and claimed subject matter relates to wet etchants exhibiting high copper and cobalt etching rates where the etching rate ratio between the two metals can be varied. The wet etchants have a composition comprising a formulation consisting of: at least one alkanolamine having at least two carbon atoms, at least one amino substituent and at least one hydroxyl substituent with the amino and hydroxyl substituents attached to two different carbon atoms; at least one pH adjuster for adjusting the pH of the formulation to between approximately 9 and approximately 12; at least one chelating agent; and water.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: October 8, 2024
    Assignee: Versum Materials US, LLC
    Inventors: Chung-Yi Chang, Wen Dar Liu, Yi-Chia Lee
  • Patent number: 12092284
    Abstract: A vehicle lamp having a switching structure for low-beam and high-beam headlights is provided. The vehicle lamp includes a heat dissipating device, an LED light source, an electromagnet, a reflector, a lens unit, a light-shaping plate, and a driving rod. The LED light source and the electromagnet are disposed on the heat dissipating device, and the reflector is a one-piece structure disposed above the LED light source. The driving rod is disposed between the electromagnet and the light-shaping plate, and the electromagnet drives the driving rod to synchronously drive the light-shaping plate to be moved to a first position or a second position. A top surface of the heat dissipating device is oblique relative to a central axis of the lens unit, and the LED light source is disposed on the top surface of the heat dissipating device.
    Type: Grant
    Filed: September 23, 2023
    Date of Patent: September 17, 2024
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang
  • Publication number: 20240241416
    Abstract: A self-powered cholesteric liquid crystal display (ChLCD) device and a method for tracking maximum power are disclosed. The ChLCD device includes a solar cell module, electrical energy for charging, an energy storage device, a charging unit, and a ChLCD module. The method of tracking the maximum power is: supply electrical energy for charging to the charging unit, sense the ambient temperature, and capture the sensed ambient temperature, correspond its value to the voltage value in the comparison data, and adjust the reference driving voltage with a resistor divider, and then electrically charging to the charging unit by the reference driving voltage, so that the charging unit can capture the maximum power of the electrical energy from the solar cell module, and then store the electrical energy in the energy storage device, to refresh the display screen of the ChLCD module and the ChLCD device can effectively utilize electricity.
    Type: Application
    Filed: December 28, 2023
    Publication date: July 18, 2024
    Inventors: CHUNG-YI CHANG, WU-CHANG YANG, CHI-CHANG LIAO
  • Publication number: 20240233998
    Abstract: An electromagnet structure adopted in a vehicle lamp is provided. The electromagnet structure can be disposed on a heat dissipating device of the vehicle lamp, and includes a housing, a coil seat, a coil, a movable iron core, and a push-pull rod. The coil seat is disposed in the housing, the coil is disposed on the coil seat, and the movable iron core is disposed in the coil seat. The push-pull rod is connected to the movable iron core, one end of the push-pull rod has a holding portion formed thereon that can hold one end of the driving rod. The electromagnet structure further includes a Zener diode that can provide a stable voltage and a connector that can transmit electrical power to the coil to drive movement of the movable iron core such that the push-pull rod synchronously drives the driving rod.
    Type: Application
    Filed: January 7, 2023
    Publication date: July 11, 2024
    Inventor: CHUNG-YI CHANG
  • Publication number: 20240218997
    Abstract: A vehicle lamp having a switching structure for low-beam and high-beam headlights is provided. The vehicle lamp includes a heat dissipating device, an LED light source, an electromagnet, a reflector, a lens unit, a light-shaping plate, and a driving rod. The LED light source and the electromagnet are disposed on the heat dissipating device, and the reflector is a one-piece structure disposed above the LED light source. The driving rod is disposed between the electromagnet and the light-shaping plate, and the electromagnet drives the driving rod to synchronously drive the light-shaping plate to be moved to a first position or a second position. A top surface of the heat dissipating device is oblique relative to a central axis of the lens unit, and the LED light source is disposed on the top surface of the heat dissipating device.
    Type: Application
    Filed: September 23, 2023
    Publication date: July 4, 2024
    Inventor: CHUNG-YI CHANG
  • Publication number: 20240103377
    Abstract: A composition and method for removing a metal-containing layer or portion of a layer of a pellicle of an EUV mask are provided. The composition includes water; one or more oxidizing agents; and one or more acids. The method includes forming one or more layers over a silicon substrate with at least one of those layers includes a metal containing layer and removing the metal containing layer by contacting the metal containing layer with the composition of the disclosed and claimed subject matter.
    Type: Application
    Filed: October 15, 2020
    Publication date: March 28, 2024
    Applicant: Versum Materials US, LLC
    Inventors: CHAO-HSIANG CHEN, CHUNG-YI CHANG, YI-CHIA LEE, WEN DAR LIU
  • Patent number: 11929257
    Abstract: Described herein are etching solutions and method of using the etching solutions suitable for etching aluminum nitride (AlN) from a semiconductor substrate during the manufacture of a semiconductor device comprising AlN and silicon material without harming the silicon material. The etching solution comprises a cationic surfactant, water, a base, and a water-miscible organic solvent.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: March 12, 2024
    Assignee: Versum Materials US, LLC
    Inventors: Chung Yi Chang, Wen Dar Liu, Yi-Chia Lee
  • Patent number: 11890984
    Abstract: A vehicle lamp having a switching structure for low-beam and high-beam headlights is provided. The vehicle lamp includes a heat dissipating device, an LED light source, an electromagnet, a reflector assembly, a lens unit, a light-shaping plate, a driving rod, and an intermediate plate. The LED light source and the electromagnet are disposed on the heat dissipating device, and the light-shaping plate is rotatably disposed on the electromagnet. The driving rod is disposed between the electromagnet and the light-shaping plate, and the electromagnet drives the driving rod to synchronously drive the light-shaping plate to be moved to a first position or a second position. The intermediate plate is replaceably connected between the lens unit and the heat dissipating device.
    Type: Grant
    Filed: December 29, 2022
    Date of Patent: February 6, 2024
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang
  • Patent number: 11852314
    Abstract: The vehicle lamp having a dipped and main beam headlight switching structure includes a heat-dissipating device, an LED light source, an electromagnet, a light-reflecting assembly, a lens assembly, a light-shaping plate and a driving rod. The LED light source and the electromagnet are disposed on the heat-dissipating device. The light-shaping plate is rotatably disposed above the electromagnet. The driving rod is disposed between the electromagnet and the light-shaping plate. The electromagnet is configured to drive the driving rod to move the light-shaping plate to the first position or the second position, so as to change the reflected light to form near light or far light. An empty space is formed between the lens assembly and the heat-dissipating device for accommodating components.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: December 26, 2023
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang
  • Patent number: 11828428
    Abstract: A vehicle lamp structure includes a heat dissipating device, an LED light source, a reflector, a supporting frame, a light-blocking plate, and a lens unit. The LED light source, the reflector, and the supporting frame are disposed on the heat dissipating device. The LED light source includes a substrate and LED units that are arranged along a lengthwise direction. The reflector has reflection surfaces that are respectively located above the LED units such that light emitted by the LED units is reflected by the reflection surfaces. The light-blocking plate is disposed in the supporting frame and has a frame body and at least one baffle, and the baffle is disposed in the frame body, such that through holes are formed in the frame body so that the light reflected by the plurality of reflection surfaces can pass through the through holes, respectively.
    Type: Grant
    Filed: January 30, 2023
    Date of Patent: November 28, 2023
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang
  • Patent number: 11739900
    Abstract: A vehicle lamp having a switching structure for low-beam and high-beam headlights is provided. The vehicle lamp includes a heat dissipating device, an LED light source, an electromagnet, a reflector, a lens unit, a light-shaping plate, a driving rod, and an adjustment rod. The LED light source and the electromagnet are disposed on the heat dissipating device, and the light-shaping plate is rotatably disposed above the electromagnet. The driving rod is disposed between the electromagnet and the light-shaping plate. The electromagnet drives the driving rod to synchronously drive the light-shaping plate to be moved to a first position or a second position. The adjustment rod is disposed on the heat dissipating device, one end of the adjustment rod abuts against the light-shaping plate, and another end of the adjustment rod is exposed from the heat dissipating device.
    Type: Grant
    Filed: December 22, 2022
    Date of Patent: August 29, 2023
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang
  • Publication number: 20230002675
    Abstract: The disclosed and claimed subject matter relates to wet etchants exhibiting high copper and cobalt etching rates where the etching rate ratio between the two metals can be varied. The wet etchants have a composition comprising a formulation consisting of: at least one alkanolamine having at least two carbon atoms, at least one amino substituent and at least one hydroxyl substituent with the amino and hydroxyl substituents attached to two different carbon atoms; at least one pH adjuster for adjusting the pH of the formulation to between approximately 9 and approximately 12; at least one chelating agent; and water.
    Type: Application
    Filed: September 30, 2020
    Publication date: January 5, 2023
    Applicant: Versum Materials US, LLC
    Inventors: CHUNG-YI CHANG, WEN DAR LIU, YI-CHIA LEE
  • Patent number: D971462
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: November 29, 2022
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang
  • Patent number: D987863
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: May 30, 2023
    Assignee: SONAR AUTO PARTS CO., LTD.
    Inventor: Chung-Yi Chang