Patents by Inventor Tzu-Chung Chang

Tzu-Chung 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).

  • Publication number: 20240113112
    Abstract: Methods of cutting gate structures and fins, and structures formed thereby, are described. In an embodiment, a substrate includes first and second fins and an isolation region. The first and second fins extend longitudinally parallel, with the isolation region disposed therebetween. A gate structure includes a conformal gate dielectric over the first fin and a gate electrode over the conformal gate dielectric. A first insulating fill structure abuts the gate structure and extends vertically from a level of an upper surface of the gate structure to at least a surface of the isolation region. No portion of the conformal gate dielectric extends vertically between the first insulating fill structure and the gate electrode. A second insulating fill structure abuts the first insulating fill structure and an end sidewall of the second fin. The first insulating fill structure is disposed laterally between the gate structure and the second insulating fill structure.
    Type: Application
    Filed: December 1, 2023
    Publication date: April 4, 2024
    Inventors: Ryan Chia-Jen Chen, Cheng-Chung Chang, Shao-Hua Hsu, Yu-Hsien Lin, Ming-Ching Chang, Li-Wei Yin, Tzu-Wen Pan, Yi-Chun Chen
  • Patent number: 10728639
    Abstract: A speaker mounting assembly includes a frame to which a plurality of fixing seats is coupled. Each fixing seat includes a sliding space, a guiding groove aligned with the sliding space, and an engagement portion that has a stop portion aligned with the sliding space and an ejection port intercommunicating with the sliding space. The ejection port includes an actuating portion. A fixing member is slidably received in the sliding space and is pivotably connected to an engaging plate movable through the ejection port. The fixing member abuts against one of a first limiting member aligned with the stop portion and a second limiting member having a coupling and abutting block and an interlocking pin. The interlocking pin is retractable into or extendable beyond the actuating portion, such that the coupling and abutting block abuts against or does not abut against the fixing member.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: July 28, 2020
    Inventor: Tzu-Chung Chang
  • Patent number: 9615156
    Abstract: An engaging structure is used for installation of a loudspeaker into an installation hole of a partition. The installation hole extends through first and second faces of the partition. The engaging structure includes a receiving portion and a plurality of clamping units. The receiving portion has a receiving hole for receiving the loudspeaker. The clamping units are coupled with the receiving portion and surround the receiving hole. Each clamping unit includes first and second clamping members. The first clamping member includes a first end connected to a first end of the second clamping member, and a second end connected to a first wheel. The first wheel abuts with an inner periphery of the partition. The second clamping member includes a second end connected to a second wheel, and the second wheel abuts with one of the first and second faces of the partition.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 4, 2017
    Inventor: Tzu-Chung Chang
  • Publication number: 20170078778
    Abstract: An engaging structure is used for installation of a loudspeaker into an installation hole of a partition. The installation hole extends through first and second faces of the partition. The engaging structure includes a receiving portion and a plurality of clamping units. The receiving portion has a receiving hole for receiving the loudspeaker. The clamping units are coupled with the receiving portion and surround the receiving hole. Each clamping unit includes first and second clamping members. The first clamping member includes a first end connected to a first end of the second clamping member, and a second end connected to a first wheel. The first wheel abuts with an inner periphery of the partition. The second clamping member includes a second end connected to a second wheel, and the second wheel abuts with one of the first and second faces of the partition.
    Type: Application
    Filed: September 16, 2015
    Publication date: March 16, 2017
    Inventor: Tzu-Chung Chang
  • Publication number: 20160142800
    Abstract: An in-wall/in-ceiling speaker with grid assembly includes a grid with a plurality of first engagement portions and a body with a plurality of second engagement portions. The grid firmly couples with the body by engaging the plurality of second engagement portions with the plurality of first engagement portions, which reduces the production costs of the in-wall/in-ceiling speaker with grid assembly and prevents the grid from falling off from the body.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 19, 2016
    Inventor: Tzu-Chung Chang
  • Publication number: 20150086065
    Abstract: A loudspeaker with double dampers include a magnetic circuit forming a magnetic field, a voice coil passing through the magnetic field of the magnetic circuit, a vibration module connected with the voice coil, a frame connected with the vibration module, and a supporting module having a pillar and first and second dampers. The pillar of the supporting module is arranged inside the voice coil and mounted on the magnetic circuit. The first damper of the supporting module is connected between the pillar and an inner surface of the voice coil, and the second damper is connected between an outer surface of the voice coil and an inner surface of the frame.
    Type: Application
    Filed: September 23, 2013
    Publication date: March 26, 2015
    Inventor: Tzu-Chung Chang
  • Patent number: 8520876
    Abstract: An assembly structure for a speaker system includes an iron grille, a speaker frame, a plurality of magnets and a plurality of pads. The speaker frame is covered with the iron grille and includes a plurality of through-holes on one face thereof. Each of the through-holes includes a first receiving portion and a second receiving portion. The speaker frame further includes a plurality of magnets each received in the first receiving portion of a respective one of the through-holes. The speaker frame further includes a plurality of pads each received in the second receiving portion of the respective one of the through-holes.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: August 27, 2013
    Inventor: Tzu-Chung Chang
  • Publication number: 20120275627
    Abstract: A sandwich-type woofer with two sound wave propagation directions includes a first magnetic-conducting plate unit, a second magnetic-conducting plate unit, a magnet unit, a coil frame, a first vibrating unit, a second vibrating unit, a first coil and a second coil. The magnet unit is sandwiched between the first and second magnetic-conducting plate units. The coil frame extends through the first and second magnetic-conducting plate units and the magnet unit, and has first and second ends. The first vibrating unit is disposed at the first end of the coil frame and the second vibrating unit is disposed at the second end of the coil frame. The first coil is arranged on a portion of the coil frame corresponding to the first magnetic-conducting plate unit and the second coil is arranged on another portion of the coil frame corresponding to the second magnetic-conducting plate unit.
    Type: Application
    Filed: April 26, 2011
    Publication date: November 1, 2012
    Inventor: Tzu-Chung Chang
  • Publication number: 20120275638
    Abstract: A sandwich-type woofer with two sound wave propagation directions includes a first magnetic-conducting plate unit, a second magnetic-conducting plate unit, a magnet unit, a coil frame, a first vibrating unit, a second vibrating unit, a first coil and a second coil. The magnet unit is sandwiched between the first and second magnetic-conducting plate units. The coil frame extends through the first and second magnetic-conducting plate units and the magnet unit, and has first and second ends. The first vibrating unit is disposed at the first end of the coil frame and the second vibrating unit is disposed at the second end of the coil frame. The first coil is arranged on a portion of the coil frame corresponding to the first magnetic-conducting plate unit and the second coil is arranged on another portion of the coil frame corresponding to the second magnetic-conducting plate unit.
    Type: Application
    Filed: July 26, 2011
    Publication date: November 1, 2012
    Inventor: Tzu-Chung Chang
  • Publication number: 20120207333
    Abstract: A sound box includes a tweeter, a mid-range speaker, a woofer, an infrared receiver, a LED displayer and an integral module. The infrared receiver receives a control signal. The LED displayer is connected to the infrared receiver. The integral module includes a processor, an audio input port, a stereo audio input port, an USB input port, a video output port, a power amplifier, an output port and a control module. The USB input port is connected to the processor. The video output port is, connected between the processor and a displayer. The power amplifier has an output port and is connected to the tweeter, mid-range speaker, woofer, infrared receiver and LED displayer. The audio output port sends signals from the audio input port, stereo audio input port, USB input port and processor to the power amplifier which generates an amplified signal. The control module is connected to the power amplifier.
    Type: Application
    Filed: February 15, 2011
    Publication date: August 16, 2012
    Inventor: Tzu-Chung Chang
  • Publication number: 20110317860
    Abstract: An assembly structure for a speaker system is disclosed. The assembly structure includes an iron grille, a speaker frame, a plurality of magnets and a plurality of pads. The speaker frame is covered with the iron grille and includes a plurality of through-holes on one face thereof. Each of the through-holes includes a first receiving portion and a second receiving portion. The speaker frame further includes a plurality of magnets, each being received in the first receiving portion of a respective one of the through-holes. The speaker frame further includes a plurality of pads, each being received in the second receiving portion of the respective one of the through-holes.
    Type: Application
    Filed: March 16, 2011
    Publication date: December 29, 2011
    Inventor: Tzu-Chung Chang
  • Publication number: 20110110537
    Abstract: A light-powered loudspeaker system including a solar power generator, a power storage device, a wireless signal receiver, a power amplifier and a speaker module is disclosed. The solar power generator is configured to receive a solar energy and convert the received solar energy into electricity energy. The power storage device is coupled to the solar power generator for storing the converted electricity energy. The wireless signal receiver is coupled to the power storage device, receives wireless audio signals and generates an output signal. The power amplifier is coupled to the power storage device and the wireless signal receiver, amplifies the output signal and generates an amplified audio signal. The speaker module is coupled to the power amplifier and produces voices according to the amplified audio signal.
    Type: Application
    Filed: November 6, 2009
    Publication date: May 12, 2011
    Inventor: Tzu-Chung Chang
  • Publication number: 20100278370
    Abstract: A motor structure of loudspeaker comprises a magnet, a top plate, a bottom plate, and a pole piece. The magnet has two opposite sides. The top plate rests on one of the two sides of the magnet and jointly forms a central bore with the magnet. The bottom plate supports the magnet from the other side of the magnet. The pole piece is formed on the bottom plate and extends into the central bore to face an inner periphery of the top plate and to form an air gap between the pole piece and the top plate. What is characterized in that a distance between the pole piece and an axial mid-part of the inner periphery being larger than another distance between the pole piece and any one of two axial ends of the inner periphery.
    Type: Application
    Filed: April 30, 2009
    Publication date: November 4, 2010
    Inventor: Tzu-Chung Chang
  • Patent number: 7616775
    Abstract: An engaging device for a speaker cabinet includes a grille, a cabinet housing, a positioning seat, and a positioning member. The grille includes one of an assembling hole and a positioning hole, and the cabinet housing includes the other of the positioning hole and the assembling hole. The positioning seat is mounted in the assembling hole and includes a deformable flange and a receptacle. An inner circumferential wall delimiting the assembling hole squeezes the deformable flange to form a neck in the receptacle. The positioning member includes a shank mounted in the positioning hole. A head of the positioning member is mounted into the receptacle of the positioning seat. The neck retains a retaining flange on the head of the positioning member, thereby securely engaging the grille with the cabinet housing by the positioning seat and the positioning member.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: November 10, 2009
    Inventor: Tzu-Chung Chang
  • Publication number: 20070169988
    Abstract: An engaging device for a speaker cabinet includes a grille, a cabinet housing, at least one positioning seat, and at least one positioning member. The grille includes one of at least one assembling hole and at least one positioning hole, and the cabinet housing includes the other of the positioning hole and the assembling hole. The positioning seat is mounted in the assembling hole and includes a deformable flange and a receptacle. An inner circumferential wall delimiting the assembling hole squeezes the deformable flange to form a neck in the receptacle. The positioning member includes a shank mounted in the positioning hole. A head of the positioning member is mounted into the receptacle of the positioning seat. The neck retains a retaining flange on the head of the positioning member, thereby securely engaging the grille with the cabinet housing by the positioning seat and the positioning member.
    Type: Application
    Filed: January 12, 2006
    Publication date: July 26, 2007
    Inventor: Tzu-Chung Chang
  • Patent number: 7031488
    Abstract: A super tweeter includes a magnetic base, a voice coil, a frame annularly mounted to the magnetic base, a central supporting member mounted on a central portion of the magnetic base, a diaphragm, an annular inner supporting member, and an annular outer supporting member. The diaphragm is connected between an annular outer side of the annular inner supporting member and an annular inner side of the annular outer supporting member. An annular inner side of the annular inner supporting member is engaged with the central supporting member. An annular outer side of the annular outer supporting member is engaged with the frame. The annular inner supporting member and the annular outer supporting member cause the diaphragm to vibrate in a balanced manner, generating super high frequency range of sound waves.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: April 18, 2006
    Assignee: Sun Technique Electric Co., Ltd.
    Inventor: Tzu-Chung Chang
  • Publication number: 20050238197
    Abstract: A super tweeter includes a magnetic base, a voice coil, a frame annularly mounted to the magnetic base, a central supporting member mounted on a central portion of the magnetic base, a diaphragm, an annular inner supporting member, and an annular outer supporting member. The diaphragm is connected between an annular outer side of the annular inner supporting member and an annular inner side of the annular outer supporting member. An annular inner side of the annular inner supporting member is engaged with the central supporting member. An annular outer side of the annular outer supporting member is engaged with the frame. The annular inner supporting member and the annular outer supporting member cause the diaphragm to vibrate in a balanced manner, generating super high frequency range of sound waves.
    Type: Application
    Filed: April 23, 2004
    Publication date: October 27, 2005
    Applicant: Sun Technique Electric Co., Ltd.
    Inventor: Tzu-Chung Chang