Patents by Inventor Che-Wei Chang

Che-Wei 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: 11747711
    Abstract: An optical system is provided and it includes a first optical module and a second optical module. The first optical module includes a first connecting member for connecting a first optical element. The second optical module includes a second connecting member for connecting a second optical element. The first optical module and the second optical module are arranged in a first direction.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: September 5, 2023
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Chang Hu, Che-Wei Chang, Sung-Mao Tsai, Yi-Cheng Hsiao, Che-Hsiang Chiu, Sin-Jhong Song
  • Publication number: 20230240151
    Abstract: A method for fabricating a semiconductor device includes the steps of forming a magnetic tunneling junction (MTJ) on a MRAM region of a substrate, forming a first inter-metal dielectric (IMD) layer around the MTJ, forming a patterned mask on a logic region of the substrate, performing a nitridation process to transform part of the first IMD layer to a nitride layer, forming a first metal interconnection on the logic region, forming a stop layer on the first IMD layer, forming a second IMD layer on the stop layer, and forming a second metal intercom in the second IMD layer to connect to the MTJ.
    Type: Application
    Filed: March 17, 2023
    Publication date: July 27, 2023
    Applicant: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Chen-Yi Weng, Si-Han Tsai, Che-Wei Chang, Po-Kai Hsu, Jing-Yin Jhang, Yu- Ping Wang, Ju-Chun Fan, Ching-Hua Hsu, Yi-Yu Lin, Hung-Yueh Chen
  • Publication number: 20230227005
    Abstract: The disclosure is a wiper structure. The main wiper frame includes a fixing seat. A pair of secondary wiper frames is connected to two ends of the main wiper frame. Each secondary wiper frame includes a flexible sheet. The flexible sheet is disposed with sliding troughs. A length of the sliding trough is greater than a width of the sliding trough. Multiple engaging frames are evenly disposed on each secondary wiper frame. Each engaging frame includes a pressing wing and a sliding block. The sliding block includes a neck bar with a passing diameter. The passing diameter is less than the trough width. The sliding block of each engaging frame passes through the opening and abuts against each sliding trough through the neck bar. The sliding block is slidable in each sliding trough with a change of an external force exerted on corresponding one of the secondary wiper frames.
    Type: Application
    Filed: January 14, 2022
    Publication date: July 20, 2023
    Inventors: Che-Wei CHANG, Cheng-Kai YANG
  • Patent number: 11706996
    Abstract: A semiconductor device includes: a substrate comprising a magnetic tunneling junction (MTJ) region and a logic region; a first MTJ on the MTJ region; a first metal interconnection on the logic region; and a cap layer extending from a sidewall of the first MTJ to a sidewall of the first metal interconnection. Preferably, the cap layer on the MTJ region and the cap layer on the logic region comprise different thicknesses.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: July 18, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Yu-Ping Wang, Chen-Yi Weng, Chin-Yang Hsieh, Si-Han Tsai, Che-Wei Chang, Jing-Yin Jhang
  • Patent number: 11693293
    Abstract: The present disclosure provides an optical system, including a first optical mechanism. The first optical mechanism includes a first movable part, a fixed assembly, a first driving assembly and a guiding assembly. The first movable part includes an optical element. The first movable part is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable part to move relative to the fixed assembly. The guiding assembly is configured to guide the first movable part to move relative to the fixed assembly. A friction force is generated between the first movable part and the guiding assembly, and the first movable part is temporarily positioned on the fixed assembly through the friction force.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: July 4, 2023
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Hsi Wang, Chao-Chang Hu, Che-Wei Chang, Chih-Wei Weng
  • Patent number: 11685340
    Abstract: The disclosure is a wiper structure. The main wiper frame includes a fixing seat. A pair of secondary wiper frames is connected to two ends of the main wiper frame. Each secondary wiper frame includes a flexible sheet. The flexible sheet is disposed with sliding troughs. A length of the sliding trough is greater than a width of the sliding trough. Multiple engaging frames are evenly disposed on each secondary wiper frame. Each engaging frame includes a pressing wing and a sliding block. The sliding block includes a neck bar with a passing diameter. The passing diameter is less than the trough width. The sliding block of each engaging frame passes through the opening and abuts against each sliding trough through the neck bar. The sliding block is slidable in each sliding trough with a change of an external force exerted on corresponding one of the secondary wiper frames.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: June 27, 2023
    Assignee: DANYANG UPC AUTO PARTS CO., LTD.
    Inventors: Che-Wei Chang, Cheng-Kai Yang
  • Publication number: 20230197165
    Abstract: A sensing device for a non-volatile memory includes a reference circuit, two switches, a sensing circuit and a judging circuit. The reference circuit is connected to a first node. A first terminal of the first switch is connected with the first node and a control terminal of the first switch receives an inverted reset pulse. A first terminal of the second switch is connected with the first node, a second terminal of the second switch receives a ground voltage, and a control terminal of the second switch receives a reset pulse. The sensing circuit is connected between the second terminal of the first switch and a second node. The sensing circuit generates a first sensed current. The judging circuit is connected to the second node. The judging circuit receives the first sensed current and generates an output data according to the first sensed current.
    Type: Application
    Filed: September 21, 2022
    Publication date: June 22, 2023
    Inventor: Che-Wei CHANG
  • Publication number: 20230196988
    Abstract: A scan-type display apparatus includes an LED array and a data driver. The LED array has a common anode configuration, and includes multiple scan lines, multiple data lines and multiple LEDs. The data driver includes multiple data driving circuits, each of which includes a current driver and a detector. The current driver has an output terminal connected to the data line corresponding to the data driving circuit, and outputs one of a drive current and a clamp voltage at the output terminal of the current driver based on a pulse width control signal. The detector is connected to the current driver, and generates a detection signal that indicates whether any one of the LEDs connected to the data line corresponding to the data driving circuit is short circuited based on a detection timing signal and a feed-in voltage related to a voltage at the output terminal of the current driver.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 22, 2023
    Applicant: MACROBLOCK, INC.
    Inventors: Chi-Min HSIEH, Che-Wei CHANG, Chen-Yuan KUO, Wei-Hsiang CHENG
  • Publication number: 20230196957
    Abstract: A scan-type display apparatus includes an LED array and a scan driver. The LED array has a common cathode configuration, and includes multiple scan lines, multiple data lines and multiple LEDs. The scan driver includes multiple scan driving circuits. Each scan driving circuit includes a voltage generator and a detector. The voltage generator has an output terminal that is connected to the scan line corresponding to the scan driving circuit, and is configured to output one of a common voltage and a clamp voltage at the output terminal of the voltage generator. The detector is connected to the output terminal of the voltage generator, and generates a detection signal that indicates whether any one of the LEDs connected to the scan line corresponding to the scan driving circuit is short circuited based on a voltage at the output terminal of the voltage generator and a detection timing signal.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 22, 2023
    Applicant: MACROBLOCK, INC.
    Inventors: Chi-Min HSIEH, Che-Wei CHANG, Chen-Yuan KUO, Wei-Hsiang CHENG
  • Publication number: 20230196987
    Abstract: A scan-type display apparatus includes an LED array and a scan driver. The LED array has a common anode configuration, and includes multiple scan lines, multiple data lines and multiple LEDs. The scan driver includes multiple scan driving circuits. Each scan driving circuit includes a voltage generator and a detector. The voltage generator has an output terminal that is connected to the scan line corresponding to the scan driving circuit, and is configured to output one of an input voltage and a clamp voltage at the output terminal of the voltage generator. The detector is connected to the output terminal of the voltage generator, and generates a detection signal that indicates whether any one of the LEDs connected to the scan line corresponding to the scan driving circuit is short circuited based on a voltage at the output terminal of the voltage generator and a detection timing signal.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 22, 2023
    Applicant: MACROBLOCK, INC.
    Inventors: Chi-Min HSIEH, Che-Wei CHANG, Chen-Yuan KUO, Wei-Hsiang CHENG
  • Publication number: 20230196989
    Abstract: A scan-type display apparatus includes an LED array and a data driver. The LED array has a common cathode configuration, and includes multiple scan lines, multiple data lines and multiple LEDs. The data driver includes multiple data driving circuits, each of which includes a current driver and a detector. The current driver has an output terminal connected to the data line corresponding to the data driving circuit, and outputs one of a drive current and a clamp voltage at the output terminal of the current driver based on a pulse width control signal. The detector is connected to the current driver, and generates a detection signal that indicates whether any one of the LEDs connected to the data line corresponding to the data driving circuit is short circuited based on a detection timing signal and a feed-in voltage related to a voltage at the output terminal of the current driver.
    Type: Application
    Filed: December 5, 2022
    Publication date: June 22, 2023
    Applicant: MACROBLOCK, INC.
    Inventors: Chi-Min HSIEH, Che-Wei CHANG, Chen-Yuan KUO, Wei-Hsiang CHENG
  • Patent number: 11682955
    Abstract: A vibration module is provided, having a main axis passing through the center of the vibration module, including a fixed part and a first vibration part. The first vibration part is disposed within the fixed part. The first vibration part includes a first moving member and a first driving assembly. The first driving assembly drives the first moving member to move relative to the fixed part.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: June 20, 2023
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Chang Hu, Liang-Ting Ho, Che-Wei Chang
  • Publication number: 20230145504
    Abstract: An auxiliary power circuit of a conversion module is used to supply power to a control unit, and an input end of the conversion module includes an even number of energy storage units coupled in series. The auxiliary power circuit includes an even number of primary-side circuits and a secondary-side circuit. Each primary-side circuit includes a first switch unit, a second switch unit, and a resonance tank. The first switch unit is connected to the second switch unit in series, and is correspondingly connected to one of the energy storage units in parallel. The resonance tank is connected to the second switch unit in parallel. The secondary-side circuit is coupled to the resonance tanks of two of the primary-side circuits to acquire power and supply power to the control unit.
    Type: Application
    Filed: May 3, 2022
    Publication date: May 11, 2023
    Inventors: Che-Wei CHANG, Wen-Lung HUANG, Sheng-Hua LI
  • Patent number: 11644036
    Abstract: An assembly structure of a multi-stage impeller and wheel housing for use in a submersible pump that includes a connecting seat having a drainage channel, shaft, intermediate unit which has a wheel housing, inner guide cover, and impeller. The wheel housing has a spacer, with an upper ring housing and lower ring canopy extending upward and downward, respectively, along the perimeter of the spacer. The intermediate unit has the upper ring housing connected to the canopy of the connecting seat by a swivel snap structure. A bottom unit has a bottom impeller and bottom wheel housing, which has a water suction port, a bottom plate and a bottom ring housing that extends upward along the perimeter of the bottom plate. A bottom ring canopy of an intermediate unit is connected by a rotating snap structure, and the bottom ring housing is pressed by a sealing ring.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 9, 2023
    Assignee: CHANG INDUSTRY CO., LTD.
    Inventors: Sheng-Fu Chang, Che-Wei Chang, Cheng-Lung Chang
  • Publication number: 20230136025
    Abstract: An optical element driving mechanism is provided and includes a movable portion and a fixed portion. The movable portion includes a carrier for carrying an optical member with a first optical axis. The fixed portion has a top surface, a first side surface and a second side surface. The top surface extends in a direction that is parallel to the first optical axis. The first side surface and the second side surface extend in a direction that is not parallel to the first optical axis from the edge of the top surface and face different sides of the optical member. The shortest distance between the optical member and the first side surface is shorter than the shortest distance between the optical member and the second side surface. The optical element driving mechanism includes a noise-reducing structure configured to avoid a noise entering a photosensitive member.
    Type: Application
    Filed: December 28, 2022
    Publication date: May 4, 2023
    Inventors: Chien-Yu KAO, Chen-Hsien FAN, Chih-Wei WENG, Chao-Chang HU, Che-Wei CHANG
  • Publication number: 20230134117
    Abstract: A lever-operated latch device includes an assembly of a case body, an actuation body mounted on the case body, a linking member and a slide body. The actuation body has a free end and a pivoted end pivotally connected with the case body in cooperation with elastic members. The free end of the actuation body is formed with two protruding arms and an opening section positioned between the protruding arms. An operation section is disposed in the opening section. The linking member has a first end pivotally connected with the free end of the actuation body (or the operation section) and a second end connected with the slide body. When an operator presses the operation section, the actuation body is permitted to move from a closed position to an opened position so as to drive the linking member and the slide body to move.
    Type: Application
    Filed: November 3, 2021
    Publication date: May 4, 2023
    Inventors: AN SZU HSU, CHUN HAN LIN, CHE WEI CHANG
  • Publication number: 20230131503
    Abstract: An optical system is provided, including a housing, an optical element, a first movable part, a driving assembly, and a temperature adjusting module. The optical element is disposed on the housing. The first movable part is movably connected to the housing. The driving assembly is configured to drive the first movable part to move relative to the housing. The temperature adjusting module is disposed in the housing for adjusting the temperature of the optical system.
    Type: Application
    Filed: October 21, 2022
    Publication date: April 27, 2023
    Inventors: Chao-Hsi WANG, Chao-Chang HU, Yueh-Lin LEE, Che-Wei CHANG
  • Patent number: 11637233
    Abstract: A method for fabricating a semiconductor device includes the steps of forming a magnetic tunneling junction (MTJ) on a MRAM region of a substrate, forming a first inter-metal dielectric (IMD) layer around the MTJ, forming a patterned mask on a logic region of the substrate, performing a nitridation process to transform part of the first IMD layer to a nitride layer, forming a first metal interconnection on the logic region, forming a stop layer on the first IMD layer, forming a second IMD layer on the stop layer, and forming a second metal intercom in the second IMD layer to connect to the MTJ.
    Type: Grant
    Filed: November 1, 2020
    Date of Patent: April 25, 2023
    Assignee: UNITED MICROELECTRONICS CORP.
    Inventors: Hui-Lin Wang, Chen-Yi Weng, Si-Han Tsai, Che-Wei Chang, Po-Kai Hsu, Jing-Yin Jhang, Yu-Ping Wang, Ju-Chun Fan, Ching-Hua Hsu, Yi-Yu Lin, Hung-Yueh Chen
  • Patent number: 11618415
    Abstract: The disclosure relates to a wiper assembling structure, which includes a fixing seat, an accessory seat, and a blade set. The fixing seat includes a shell seat and multiple pressing blocks disposed in the shell seat. The accessory seat includes a bottom plate and two side plates perpendicularly extended from the bottom plate. Each of two ends of each side plate is formed with multiple protrusive sheets. The accessory seat is positioned in the fixing seat by inserting the protrusive sheets into the shell seat to be pressed by the pressing blocks. The blade set includes an elastic sheet and a rubber strip. The elastic sheet is disposed under the bottom plate. The rubber strip is connected with the elastic sheet and extended on one side of the accessory seat.
    Type: Grant
    Filed: January 13, 2022
    Date of Patent: April 4, 2023
    Assignee: DANYANG UPC AUTO PARTS CO., LTD.
    Inventors: Che-Wei Chang, Cheng-Kai Yang
  • Patent number: 11614596
    Abstract: An optical element driving mechanism is provided, including a fixed portion, a movable portion, and a driving assembly. The movable portion is movably connected to the fixed portion and includes a holder to hold an optical element having a main axis. The driving assembly is disposed on the movable portion or the fixed portion for driving the movable portion to move relative to the fixed portion.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: March 28, 2023
    Assignee: TDK TAIWAN CORP.
    Inventors: Chao-Chang Hu, Mao-Kuo Hsu, Hsueh-Ju Lu, Chih-Wei Weng, Che-Wei Chang