Patents by Inventor Shin-Ter Tsai

Shin-Ter Tsai 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: 20240113607
    Abstract: A resonant vibration actuator is provided, comprising: a casing, a mover, a plurality of electromagnet sets, two elastic suspensions, and a connecting circuit; the casing is provided with connection terminals for connection on the outside; the mover comprising: a mover frame, a plurality of permanent magnet units, two magnetic backs, the permanent magnet units and the magnetic backs being arranged in the mover frame; the electromagnet sets being arranged between two permanent magnet units of the mover; the elastic suspensions being connected to the casing and the mover respectively through two connection portions at both ends; the connecting circuit being used to connect the electromagnet set and the connection terminals outside the casing; wherein, by energizing the electromagnet set, the electromagnet acts on the permanent magnet unit to make the mover move relatively in the casing to generate vibration.
    Type: Application
    Filed: November 16, 2022
    Publication date: April 4, 2024
    Inventors: Chin-Sung Liu, Hsiao-Ming Chien, Chi-Ling Chang, Shin-Ter Tsai
  • Patent number: 11874967
    Abstract: A force sensing module with vibration feedback is disclosed, comprising: a substrate, a frame and a plurality of magnetic sensors; the substrate is disposed with at least one tactile actuator, and the substrate has a touch operation surface and a mounting surface on opposite sides, the tactile actuator is mounted on the mounting surface; the frame is disposed with at least three buffer spacers, the buffer spacers connect the frame to the substrate; the magnetic sensor includes a magnet and a Hall element, one of the magnet and the Hall element is disposed on the frame, and the other is disposed on the substrate; thereby when a force is applied on the touch operation surface to make the substrate generate an offset, the Hall element outputs a force signal due to the voltage change caused by the approaching magnet, and the signal drives the tactile actuator to generate a vibration feedback.
    Type: Grant
    Filed: May 25, 2022
    Date of Patent: January 16, 2024
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien
  • Publication number: 20230333656
    Abstract: A force sensing module with vibration feedback is disclosed, comprising: a substrate, a frame and a plurality of magnetic sensors; the substrate is disposed with at least one tactile actuator, and the substrate has a touch operation surface and a mounting surface on opposite sides, the tactile actuator is mounted on the mounting surface; the frame is disposed with at least three buffer spacers, the buffer spacers connect the frame to the substrate; the magnetic sensor includes a magnet and a Hall element, one of the magnet and the Hall element is disposed on the frame, and the other is disposed on the substrate; thereby when a force is applied on the touch operation surface to make the substrate offset, the Hall element output a force signal due to the voltage change caused by approaching magnet, and the signal drives the tactile actuator to generate a vibration feedback.
    Type: Application
    Filed: May 25, 2022
    Publication date: October 19, 2023
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien
  • Publication number: 20230042927
    Abstract: A tactile feedback device for producing uniform vibration in an effective area is provided, including: a substrate, a vibration motor, a frame, and a plurality of cushion pads; the vibration motor is fixed on the substrate at an off-center position and can vibrate back-and-forth in a first direction; the frame forms a plurality of bonding areas and at least a pair of cantilever beams, the cantilever beams are located on both sides of the first direction and parallel to a second direction, the second direction is perpendicular to the first direction, and the cantilever beams are partially fixed to the substrate; the cushion pads are fixed between the substrate and the bonding area; thereby, the tactile feedback of uniform vibration can be obtained when contacting each operation position of the substrate.
    Type: Application
    Filed: August 17, 2021
    Publication date: February 9, 2023
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien
  • Patent number: 11411480
    Abstract: A linear vibration actuator motor comprises a housing, a coil, a conductive sheet, a bracket, a magnet assembly and two elastic members. The coil is fixed to the bottom wall of the housing. The conductive sheet is fixed to the top wall of the housing and is located above the coil. The bracket is disposed in an accommodating space of the housing, forming framed space, and located above the coil and below the conductive sheet. The magnet assembly is disposed in the framed space above the coil and directly below the conductive sheet. The two elastic members are respectively located between two ends of the bracket and the inner side of two side walls of the housing. Thereby, the invention utilizes the induced current to provide resistance to achieve the damping effect against the motion of the assembly of the bracket and the magnet set with respect to conductive sheet.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: August 9, 2022
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai
  • Patent number: 11404948
    Abstract: A linear vibration motor is disclosed, including: a movable part, a suspension device, and a fixed part; wherein the movable part includes at least one magnet set, and the fixed part at least includes a coil, at least one magnetically conductive element and a housing; the magnet set and the coil and the magnetically conductive element of the fixed part are arranged with a gap. The magnetically conductive element is located above, below, or both above and below the magnet set; the suspension device includes two stripe springs, respectively located on both sides of the movable part, with one side of each stripe spring connected to the movable part, and the other side connected to the fixed part. When not actuated, the suspension device is a straight full-length stripe without bending at the connections at both ends.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: August 2, 2022
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien, Chi-Ling Chang
  • Publication number: 20220103050
    Abstract: A linear vibration motor is disclosed, including: a movable part, a suspension device, and a fixed part; wherein the movable part includes at least one magnet set, and the fixed part at least includes a coil, at least one magnetically conductive element and a housing; the magnet set and the coil and the magnetically conductive element of the fixed part are arranged with a gap. The magnetically conductive element is located above, below, or both above and below the magnet set; the suspension device includes two stripe springs, respectively located on both sides of the movable part, with one side of each stripe spring connected to the movable part, and the other side connected to the fixed part. When not actuated, the suspension device is a straight full-length stripe without bending at the connections at both ends.
    Type: Application
    Filed: October 28, 2020
    Publication date: March 31, 2022
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien, Chi-Ling Chang
  • Publication number: 20210249941
    Abstract: A linear vibration motor with compound elastic system is disclosed, comprising: a movable portion, a suspension system, and a fixed portion; wherein the movable portion includes at least a magnet set, and the suspension system includes at least a support element and an elastic element, the fixed portion includes at least a coil set, a magnetically permeable element set, and a housing; the magnetically permeable element set includes at least a first magnetically permeable element set, disposed above or below the magnetic set; the magnetic set includes at least two magnets arranged spaced apart, with up-down magnetization direction and adjacent magnets of opposite polarities. The length of the magnet set is greater than the length of the first magnetically permeable element set. The elastic element and the magnetic restoring force between the magnet set and the magnetically permeable element set constitute a compound elastic system.
    Type: Application
    Filed: March 5, 2020
    Publication date: August 12, 2021
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien
  • Patent number: 11072045
    Abstract: A method and structure for compensating tolerances in assembling modules are provided. The method applies to a pressing fixture and a module with a baseline reference plane and an assembly baseline plane. The assembly baseline plane has at least three compensation baseline bumps, having the height greater than the compensation amount. The pressing fixture has a calibration reference plane. The method comprises: adjusting the position of the module or the pressing fixture to make the baseline reference plane parallel to the calibration reference plane; the pressing fixture using the calibration reference plane to press on the compensation baseline bumps, and changing the position of bump top of each compensation baseline bump; removing the pressing fixture from the compensation baseline bumps, and the plurality of the bump tops forming a preliminary baseline plane, and the preliminary baseline plane being parallel to the baseline reference plane.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: July 27, 2021
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Tsung-Min Yang, Tsung-Hung Wu, Ming-Yan Lin, Chi-Ling Chang
  • Publication number: 20210197327
    Abstract: A method and structure for compensating tolerances in assembling modules are provided. The method applies to a pressing fixture and a module with a baseline reference plane and an assembly baseline plane. The assembly baseline plane has at least three compensation baseline bumps, having the height greater than the compensation amount. The pressing fixture has a calibration reference plane. The method comprises: adjusting the position of the module or the pressing fixture to make the baseline reference plane parallel to the calibration reference plane; the pressing fixture using the calibration reference plane to press on the compensation baseline bumps, and changing the position of bump top of each compensation baseline bump; removing the pressing fixture from the compensation baseline bumps, and the plurality of the bump tops forming a preliminary baseline plane, and the preliminary baseline plane being parallel to the baseline reference plane.
    Type: Application
    Filed: February 3, 2020
    Publication date: July 1, 2021
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Tsung-Min Yang, Tsung-Hung Wu, Ming-Yan Lin, Chi-Ling Chang
  • Patent number: 10971984
    Abstract: A linear vibration motor includes a fixed portion, a movable portion, and a suspension portion; the fixed portion further includes an outer frame, a coil set, a conductive sheet set, a connecting circuit and a terminal; the movable portion includes a bracket, a primary magnet set, at least a secondary magnet set; the suspension portion includes a pair of elastic members connected to the fixed portion and the movable portion, and provides a restoring force when the movable portion is displaced; the coil set and the primary magnet set provide a driving force to drive the movable portion to generate vibration; the conductive sheet set and the secondary magnet set provide damping when the movable portion moves.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: April 6, 2021
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien
  • Patent number: 10938286
    Abstract: The invention discloses a control system for LRA, applicable to an LRA having a speed sensing coil. The control system comprises a signal amplifier, an excitation device, a flow controller, a processing unit, and a driver. The processing unit is connected to the signal amplifier, the excitation device and the flow controller, so as to stop output, output the excitation signal as a driving signal or process the induction signal from the signal amplifier into an appropriate system damping coefficient and output as a driving signal when the flow controller outputs a stop, excitation or braking state signal, respectively.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: March 2, 2021
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien, Tzu-Kuang Fang
  • Publication number: 20200350810
    Abstract: A linear vibration actuator motor comprises a housing, a coil, a conductive sheet, a bracket, a magnet assembly and two elastic members. The coil is fixed to the bottom wall of the housing. The conductive sheet is fixed to the top wall of the housing and is located above the coil. The bracket is disposed in an accommodating space of the housing, forming framed space, and located above the coil and below the conductive sheet. The magnet assembly is disposed in the framed space above the coil and directly below the conductive sheet. The two elastic members are respectively located between two ends of the bracket and the inner side of two side walls of the housing. Thereby, the invention utilizes the induced current to provide resistance to achieve the damping effect against the motion of the assembly of the bracket and the magnet set with respect to conductive sheet.
    Type: Application
    Filed: October 7, 2019
    Publication date: November 5, 2020
    Inventors: Chin-Sung Liu, Shin-Ter Tsai
  • Patent number: 10804785
    Abstract: The invention discloses a control system and a vibration control method for an LRA. The vibration control method comprises: providing an induction coil, the arrangement and the winding of the induction coil able to obtain an inductive voltage proportional to LRA vibration speed; generating a vibration signal according to inductive voltage and feeding back to a driver connected to the LRA to control the vibration of LRA; wherein the generated vibration signal satisfying the following: when induction voltage is lower than a low-speed threshold, the vibration signal causes the driver to apply a driving force in the same direction; when induction voltage is higher than a high-speed threshold, the vibration signal causes the driver to apply a driving force in the opposite direction; when induction voltage is between the low-speed threshold and the high-speed threshold, the vibration signal does not force the driver to apply force.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: October 13, 2020
    Assignee: TOPRAY MEMS INC.
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Tzu-Kuang Fang
  • Publication number: 20200313531
    Abstract: The disclosure provides a linear vibration motor, comprising: a fixed portion, a movable portion, and a suspension portion; the fixed portion further comprises an outer frame, a coil set, a conductive sheet set, a connecting circuit and a terminal; the movable portion comprises a bracket, a primary magnet set, at least a secondary magnet set; the suspension portion comprises a pair of elastic members connected to the fixed portion and the movable portion, and provides a restoring force when the movable portion is displaced; the coil set and the primary magnet set provide a driving force to drive the movable portion to generate vibration; the conductive sheet set and the secondary magnet set provide damping when the movable portion moves.
    Type: Application
    Filed: May 24, 2019
    Publication date: October 1, 2020
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Hsiao-Ming Chien
  • Publication number: 20200059149
    Abstract: The invention discloses a control system and a vibration control method for an LRA. The vibration control method comprises: providing an induction coil, the arrangement and the winding of the induction coil able to obtain an inductive voltage proportional to LRA vibration speed; generating a vibration signal according to inductive voltage and feeding back to a driver connected to the LRA to control the vibration of LRA; wherein the generated vibration signal satisfying the following: when induction voltage is lower than a low-speed threshold, the vibration signal causes the driver to apply a driving force in the same direction; when induction voltage is higher than a high-speed threshold, the vibration signal causes the driver to apply a driving force in the opposite direction; when induction voltage is between the low-speed threshold and the high-speed threshold, the vibration signal does not force the driver to apply force.
    Type: Application
    Filed: August 8, 2019
    Publication date: February 20, 2020
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Tzu-Kuang Fang
  • Publication number: 20180335598
    Abstract: A adjustment method for lens driving apparatus is provided, comprising: (a) assembling a lens in a voice coil motor (VCM), with optical axis tilting towards a normal of VCM bottom surface and forming a tilt angle; forming at least three pillars at VCM bottom surface; (b) performing processing on the pillars according to the tilting direction and tilt angle, after processing, at least pillar having a length different from remaining pillars, each pillar having a bottom at first datum plane, and the optical axis perpendicular to first datum plane; (c) an image sensor having an engaging surface engaged to the pillar bottoms and located at the first datum plane, so that the lens optical axis s perpendicular to the engaging surface of the image sensor, resulting in the optical axis of the lens overlapping an axis of the image sensor to achieve 0° tilt angle.
    Type: Application
    Filed: July 6, 2017
    Publication date: November 22, 2018
    Inventors: Tzu-Kuang Fang, Chin-Sung Liu, Shin-Ter Tsai, Yung-Fu Huang, Yueh-Lin Hsieh
  • Publication number: 20180074279
    Abstract: A dual-lens mechanic zero tilt angle adjustment method is disclosed, comprising a preparation step, an adjustment step and an engagement step, wherein preparation step comprising: disposing a dual-lens at one or two voice coil motors (VCM), with the dual-lens having optical axes respectively unparallel to the normal of the plane of an adaptor, and the optical axes forming a first and second tilt angles with the normal of the adaptor plane; adjustment step comprising: adjusting the first and second tilt angles by moving VCM to zero degree; and engagement step comprising: adhering the bottom of VCM to an engagement surface of adaptor to obtain a structure of dual-lens mechanic zero tilt angle. As such, the adaptor plane is engaged to the image sensor, and the tilt angles between the optical axes of dual-lens and the axis of the image sensor are both zero to improve imaging quality.
    Type: Application
    Filed: November 7, 2016
    Publication date: March 15, 2018
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Tsung-Min Yang, Chi-Ling Chang
  • Publication number: 20180074280
    Abstract: A single-lens mechanic zero tilt angle adjustment method is disclosed, comprising a preparation step, an adjustment step and an engagement step, wherein preparation step comprising: disposing a lens at a voice coil motor (VCM), with a gap between the bottom of VCM and an engagement surface of an adaptor and the lens optical axis forming a tilt angle with the normal the adaptor plane; adjustment step comprising: adjusting the tilt angle by moving VCM and/or adaptor to zero degree and the optical axis perpendicular to the adaptor plane; and engagement step comprising: adhering the bottom of VCM to an engagement surface of adaptor to obtain a structure of single-lens mechanic zero tilt angle. As such, the adaptor plane is engaged to the image sensor, and the tilt angles between the lens optical axis o and the axis of the image sensor is zero to improve imaging quality.
    Type: Application
    Filed: November 7, 2016
    Publication date: March 15, 2018
    Inventors: Chin-Sung Liu, Shin-Ter Tsai, Chi-Ling Chang, Hsiao-Ming Chien, Yueh-Lin Hsieh
  • Publication number: 20120120509
    Abstract: An apparatus of auto-focus module and the related assembly method are provided. The module includes a focus-driving module and a photo-sensor module. The focus-driving module includes a lens set and a focus-driving device. The outer circumference of the lens is a smooth surface and the inner circumference of the lens holder is also a smooth surface. The assembly method includes the steps of: sheathing the lens into the lens holder of the focus-driving device and fastening the lens to the lens holder to form a focus-driving module; maintaining a gap as the space for adjusting the locations of the focus-driving module and the photo-sensor module, and after adjustment, fastening the focus-driving module and the photo-sensor module.
    Type: Application
    Filed: April 4, 2009
    Publication date: May 17, 2012
    Inventors: Chin-Sung Liu, Chien Chung Pien, Tsung Kai Chang, Yi Jung Chen, Yung Fu Huang, Shin Ter Tsai