Patents by Inventor Chih-Chieh Su

Chih-Chieh Su 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: 20250208683
    Abstract: The present disclosure provides convertor circuit and related failure reporting method. The convertor circuit includes multiple power stage circuits and a control circuit, and the control circuit is coupled with multiple temperature feedback terminals of the power stage circuits at a node, and is configured to receive a highest temperature signal through the node. The failure reporting method includes: in response to at least one failure event of at least one of the power stage circuits, controlling, by the at least one of the power stage circuits, the highest temperature signal to be in a preset voltage level; and outputting, by the at least one of the power stage circuits, at least one failure code signal to the control circuit through at least corresponding one of multiple current feedback terminals of the power stage circuits.
    Type: Application
    Filed: March 11, 2024
    Publication date: June 26, 2025
    Inventor: Chih-Chieh SU
  • Publication number: 20250141358
    Abstract: The application provides a multi-phase power converter circuit and a control circuit thereof. The multi-phase power converter circuit receives an input voltage at a voltage input terminal, outputs an output voltage at a voltage output terminal, and includes a power stage circuit. The power stage circuit is coupled to the voltage input terminal and a phase output terminal. The control circuit is coupled to the power stage circuit, the phase output terminal and the voltage output terminal, generates an error signal according to a phase current of the phase output terminal, the output voltage and a reference voltage, generates a compensation signal according to the reference voltage and the error signal, generates a ramp signal according to the error signal, and controls the power stage circuit to operate according to a predetermined duty ratio when the ramp signal crosses the compensation signal, so as to increase the phase current.
    Type: Application
    Filed: March 4, 2024
    Publication date: May 1, 2025
    Inventor: Chih-Chieh SU
  • Publication number: 20250130605
    Abstract: The present disclosure provides a power supply circuit and an undershoot suppression circuit thereof. The undershoot suppression circuit includes a rising edge determination circuit, a falling edge determination circuit and a pulse generation circuit. The rising edge determination circuit detects a difference voltage between an output voltage of the power supply circuit and a reference voltage, and outputs a clock control signal with a first voltage level when the difference voltage is greater than a threshold voltage. The falling edge determination circuit detects the output voltage, and outputs a reset signal with the first voltage level when the output voltage is not smaller than the reference voltage. The pulse generation circuit generates an undershoot suppression pulse according to the clock control signal with the first voltage level and the reset signal with the first voltage level, so that the output voltage approaches the reference voltage.
    Type: Application
    Filed: February 7, 2024
    Publication date: April 24, 2025
    Inventor: Chih-Chieh SU
  • Publication number: 20250062682
    Abstract: The disclosure provides a converter circuit, a power stage circuit and a temperature balancing method. The converter circuit includes power stage circuits and a control circuit. The power stage circuit includes a power circuit, a temperature sense circuit, a current sense circuit and a current feedback control circuit. The temperature sense circuit senses a temperature of the power stage circuit, to output a temperature sense value. The current sense circuit senses an output current of the power circuit, to output a current sense value. The current feedback control circuit compares the temperature sense value with a highest temperature value of the power stage circuits, and outputs one of the current sense value and adjusted current sense value to the control circuit according to a comparison result of the temperature sense value and the highest temperature value.
    Type: Application
    Filed: October 26, 2023
    Publication date: February 20, 2025
    Inventor: Chih-Chieh SU
  • Publication number: 20240322669
    Abstract: A voltage conversion system includes a multi-phase voltage converter and a controller. The multi-phase voltage converter is coupled to a load. A first phase circuit, a second phase circuit, and a third phase circuit in the multi-phase voltage converter enter a charging state in sequence during a first period. At least one driver circuit in the multi-phase voltage converter is coupled to the first phase circuit, the second phase circuit, and the third phase circuit. The controller is coupled to the at least one driver circuit. According to a trigger event, the controller outputs at least one driving signal to the at least one driver circuit such that the at least one driver circuit adjusts the second phase circuit or the third phase circuit to be an activation item with highest priority during a second period after the first period.
    Type: Application
    Filed: September 6, 2023
    Publication date: September 26, 2024
    Inventor: Chih-Chieh SU
  • Publication number: 20230158634
    Abstract: A polish pad replacing apparatus includes a polish spindle loaded with a first polish pad, a first roller movable reciprocally under the polish spindle, a clamping element and a position sensor. The clamping element, disposed at the first roller, is to clamp or release the first polish pad. In replacing the first polish pad, a controller moves the polish spindle to a replacing position, the position sensor detects the polish spindle and if positive, have the controller to moves the first roller to insert the clamping element between the polish spindle and the first polish pad so as to clamp an edge of the first polish pad, the first roller is then moved to peel the first polish pad off, and then the first roller is moved to paste a second polish pad onto the polish spindle.
    Type: Application
    Filed: October 13, 2022
    Publication date: May 25, 2023
    Inventors: CHIH-CHIEH SU, KO-CHIEH CHAO, CHUN-HSIEN SU
  • Patent number: 11435613
    Abstract: A display apparatus is disclosed. The display apparatus includes a color filter, a first backlight unit, a second backlight unit and a third backlight unit. The first backlight unit, the second backlight unit and the third backlight unit are disposed relative to the color filter and independently emit a first color light, a second color light and a third color light to the color filter respectively. In a brightness mode, the first color light has a first intensity, the second color light has a second intensity and the third color light has a third intensity. In a color mode, when a display image of the display apparatus is biased to a third color corresponding to the third color light, the display apparatus reduces at least one of the first intensity and the second intensity.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: September 6, 2022
    Assignee: Qisda Corporation
    Inventors: Chih-Chieh Su, Chen-Yang Hu
  • Patent number: 11249346
    Abstract: A backlight module provides light to a display panel and includes a bottom board, a support frame, first and second magnetic members, a light guide device, and a light source. The support frame is connected to the bottom board to contain the light guide device. The light source is disposed on the bottom board corresponding to a light entrance surface of the light guide device. Light of the light source is incident into the light guide device via the light entrance surface and emitted to the display panel from a light exit surface of the light guide device. The first magnetic member is disposed on the support frame or the light guide device corresponding to the light source. The second magnetic member is disposed corresponding to the first magnetic member to generate a magnetic force for driving the light entrance surface to be aligned with the light source.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: February 15, 2022
    Assignee: Qisda Corporation
    Inventors: Chun-Wei Huang, Chih-Chieh Su, Chung-Yu Kuo
  • Publication number: 20220011628
    Abstract: A display apparatus is disclosed. The display apparatus includes a color filter, a first backlight unit, a second backlight unit and a third backlight unit. The first backlight unit, the second backlight unit and the third backlight unit are disposed relative to the color filter and independently emit a first color light, a second color light and a third color light to the color filter respectively. In a brightness mode, the first color light has a first intensity, the second color light has a second intensity and the third color light has a third intensity. In a color mode, when a display image of the display apparatus is biased to a third color corresponding to the third color light, the display apparatus reduces at least one of the first intensity and the second intensity.
    Type: Application
    Filed: June 29, 2021
    Publication date: January 13, 2022
    Applicant: Qisda Corporation
    Inventors: Chih-Chieh SU, Chen-Yang HU
  • Patent number: 11217736
    Abstract: A display panel formed by connecting a plurality of panels, includes a first substrate, a plurality of first light-emitting elements, a first patterned conductive layer and a first driving circuit device. The first substrate has a first light output surface and a first sidewall, wherein the first sidewall connects to the first light output surface, and forms a non-180° angle with the first light output surface. The first light-emitting elements are disposed on the first light output surface. The first patterned conductive layer is disposed on the first sidewall. The first driving circuit device is disposed on the first substrate, adjacent to an edge of the first substrate and electrically connected to one of the first light-emitting elements.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: January 4, 2022
    Assignee: Qisda Corporation
    Inventors: Chih-Chieh Su, Chen-Yang Hu, Rung-Guang Hu
  • Patent number: 11211367
    Abstract: A display panel includes a first substrate used to connect with at least one other substrate, a plurality of first light-emitting elements and a first patterned conductive layer. The first substrate includes a first light output surface and a first sidewall connecting to the first light output surface, wherein the first sidewall forms a non-180° angle with the first light output surface. The plurality of first light-emitting elements are disposed on the first light output surface. The first patterned conductive layer is disposed on the first sidewall.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: December 28, 2021
    Assignee: Qisda Corporation
    Inventors: Chih-Chieh Su, Chen-Yang Hu, Rung-Guang Hu
  • Patent number: 11164534
    Abstract: A display device including a display panel, a light guide plate and a light emitting module is disclosed. The light guide plate is opposite to the display panel and has a light incident surface. The light emitting module emits a light to the light incident surface. The light emitting module includes a substrate, multiple first light emitting elements and multiple second light emitting elements. The first light emitting elements are disposed on the substrate along the first direction and divided into multiple first luminous areas. Each first luminous area includes at least two first light emitting elements. The second light emitting elements are disposed on the substrate along the first direction and divided into multiple second luminous areas. Each second luminous area includes at least two second light emitting elements. The first and second luminous areas are staggered along the second direction perpendicular to the first direction.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: November 2, 2021
    Assignee: Qisda Corporation
    Inventors: Meng-Wei Lin, Chih-Chieh Su
  • Patent number: 11131879
    Abstract: A backlight module includes a light-transmitting shell, a first light-emitting device, a first light conversion layer and an LGP. The light-transmitting shell includes a first top plate and a first sidewall. The first top plate connects to the first sidewall and two collectively make a non-180° angle, so as to define a first light-mixing space. The first light-emitting device is disposed in the first light-mixing space to provide a first color light. The first light conversion layer is disposed on the first top plate to convert the first color light to a second color light. The LGP has a light incident surface and a light exit surface, the first top plate is disposed between the light incident surface and the first light-emitting device, and the second color light comes into the light guide plate from the light incident surface and is emitted outwards from the light exit surface.
    Type: Grant
    Filed: December 7, 2020
    Date of Patent: September 28, 2021
    Assignee: QISDA CORPORATION
    Inventor: Chih-Chieh Su
  • Publication number: 20210215975
    Abstract: A backlight module provides light to a display panel and includes a bottom board, a support frame, first and second magnetic members, a light guide device, and a light source. The support frame is connected to the bottom board to contain the light guide device. The light source is disposed on the bottom board corresponding to a light entrance surface of the light guide device. Light of the light source is incident into the light guide device via the light entrance surface and emitted to the display panel from a light exit surface of the light guide device. The first magnetic member is disposed on the support frame or the light guide device corresponding to the light source. The second magnetic member is disposed corresponding to the first magnetic member to generate a magnetic force for driving the light entrance surface to be aligned with the light source.
    Type: Application
    Filed: December 7, 2020
    Publication date: July 15, 2021
    Inventors: Chun-Wei Huang, Chih-Chieh Su, Chung-Yu Kuo
  • Publication number: 20210181550
    Abstract: A backlight module includes a light-transmitting shell, a first light-emitting device, a first light conversion layer and an LGP. The light-transmitting shell includes a first top plate and a first sidewall. The first top plate connects to the first sidewall and two collectively make a non-180° angle, so as to define a first light-mixing space. The first light-emitting device is disposed in the first light-mixing space to provide a first color light. The first light conversion layer is disposed on the first top plate to convert the first color light to a second color light. The LGP has a light incident surface and a light exit surface, the first top plate is disposed between the light incident surface and the first light-emitting device, and the second color light comes into the light guide plate from the light incident surface and is emitted outwards from the light exit surface.
    Type: Application
    Filed: December 7, 2020
    Publication date: June 17, 2021
    Applicant: Qisda Corporation
    Inventor: Chih-Chieh SU
  • Publication number: 20200313055
    Abstract: A display panel formed by connecting a plurality of panels, includes a first substrate, a plurality of first light-emitting elements, a first patterned conductive layer and a first driving circuit device. The first substrate has a first light output surface and a first sidewall, wherein the first sidewall connects to the first light output surface, and forms a non-180° angle with the first light output surface. The first light-emitting elements are disposed on the first light output surface. The first patterned conductive layer is disposed on the first sidewall. The first driving circuit device is disposed on the first substrate, adjacent to an edge of the first substrate and electrically connected to one of the first light-emitting elements.
    Type: Application
    Filed: March 23, 2020
    Publication date: October 1, 2020
    Applicant: Qisda Corporation
    Inventors: Chih-Chieh SU, Chen-Yang HU, Rung-Guang HU
  • Publication number: 20200312825
    Abstract: A display panel includes a first substrate used to connect with at least one other substrate, a plurality of first light-emitting elements and a first patterned conductive layer. The first substrate includes a first light output surface and a first sidewall connecting to the first light output surface, wherein the first sidewall forms a non-180° angle with the first light output surface. The plurality of first light-emitting elements are disposed on the first light output surface. The first patterned conductive layer is disposed on the first sidewall.
    Type: Application
    Filed: March 23, 2020
    Publication date: October 1, 2020
    Applicant: Qisda Corporation
    Inventors: Chih-Chieh SU, Chen-Yang HU, Rung-Guang HU
  • Publication number: 20200294977
    Abstract: A display apparatus includes a transparent substrate, light emitting units, and an opaque film. The transparent substrate includes a first transparent surface and a second transparent surface opposing to the first transparent surface. The light emitting units are disposed over the first transparent surface. The opaque film covers on at least one of the first transparent surface and the second transparent surface.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 17, 2020
    Applicant: Qisda Corporation
    Inventors: Yi-Cheng KUO, Meng-Wei LIN, Chih-Chieh SU
  • Publication number: 20200286869
    Abstract: A display apparatus and a manufacturing method for the same. The display apparatus includes a first display device and a second display device. The first display device includes a first circuit board, first display pixels and a first opaque rubber. The first display pixels are electrically connected on the first circuit board. The first opaque rubber includes a first outer border rubber portion outside the first display pixels; and a first spacer rubber portion in a gap space between the first display pixels. The second display device includes a second circuit board, second display pixels on the second circuit board and a second opaque rubber including a second outer border rubber portion outside the second display pixels. The first display device and the second display device are stitched together. The first outer border rubber portion and the second outer border rubber portion are faced and adjacent to each other.
    Type: Application
    Filed: March 5, 2020
    Publication date: September 10, 2020
    Applicant: Qisda Corporation
    Inventors: Yi-Cheng KUO, Meng-Wei LIN, Chih-Chieh SU
  • Publication number: 20200143755
    Abstract: A display device including a display panel, a light guide plate and a light emitting module is disclosed. The light guide plate is opposite to the display panel and has a light incident surface. The light emitting module emits a light to the light incident surface. The light emitting module includes a substrate, multiple first light emitting elements and multiple second light emitting elements. The first light emitting elements are disposed on the substrate along the first direction and divided into multiple first luminous areas. Each first luminous area includes at least two first light emitting elements. The second light emitting elements are disposed on the substrate along the first direction and divided into multiple second luminous areas. Each second luminous area includes at least two second light emitting elements. The first and second luminous areas are staggered along the second direction perpendicular to the first direction.
    Type: Application
    Filed: October 22, 2019
    Publication date: May 7, 2020
    Applicant: Qisda Corporation
    Inventors: Meng-Wei LIN, Chih-Chieh SU