Topray Mems Inc.

Hsiao-Ming Chien

Chin-Sung Liu

Shin-Ter Tsai

Chi-Ling Chang

Tzu-Kuang Fang

A resonant vibration actuator includes 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 of the casing. The mover has a mover frame, a plurality of permanent magnet units, and two magnetic backs. The permanent magnet units and the magnetic backs are arranged in the mover frame and the electromagnet sets are arranged between the permanent magnet units. Elastic suspensions are connected to the casing and the mover respectively through two connection portions at both ends. The connecting circuit is used to connect the electromagnet sets and the connection terminals outside the casing. By energizing the electromagnet sets, the electromagnet sets act on the permanent magnet units to make the mover move relatively in the casing to generate vibration.

Resonant vibration actuator

A vibration feedback device and control method thereof are provided. The vibration feedback device includes a substrate, a frame and a plurality of displacement restoration devices; one end of each displacement restoration device is connected to the frame, and the other end is connected to the substrate; one side of the substrate is the user operation surface, and the other side includes at least one driving coil, at least one induction coil, a controller and a driver; the frame also includes a first magnet set corresponding to the driving coil and a second magnet set corresponding to the induction coil; the controller processes the signal obtained by the induction coil to drive the vibration feedback device to achieve a reliable vibration suppression effect.

Vibration feedback device and control method thereof

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.

Force sensing module with vibration feedback

A slim type tactile feedback device is disclosed, including: a substrate, at least an overlapping plate, a support frame, a plurality of cushions and a vibration source; the overlapping plate being fixed to the substrate in a cantilever manner; the support frame including a frame, a void area, and at least a protruding support, the protruding support being a partial segment of the frame; the cushions being fixed between the substrate and the frame; the vibration source including a magnet set and a coil set, the magnet set and the coil set being fixed between the protruding support and the overlapping plate and located at outer side the substrate; the coil set and the magnet set being positioned correspondingly to each other and separated by a gap, the gap increasing when the substrate being pressed by finger, and the substrate moving back-and-forth through linkage motion of the vibration source.

Slim type tactile feedback device

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.

Linear vibration motor

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.

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.

Linear resonant actuator, control system and brake control method

A dual diamagnetic linear resonant actuator includes a magnetic induction element, a magnet set and a coil. The magnet set comprises four magnets. The N pole of first magnet, the N pole of second magnet, the S pole of third magnet and the S pole of fourth magnet press respectively against the first, second, third and fourth sides of the magnet induction element. The coil surrounds the magnetic induction element and the third and fourth magnets, and maintains a distance from the first end and the second end of the magnetic induction element, and from the N pole of the third and fourth magnets. As such, the first and second magnets compress magnetic field lines, and the third and fourth magnets strengthen the magnetic force, and guide the magnetic field lines towards the coil to accomplish concentration of magnetic field density and to avoid divergence of the magnetic field lines.

Dual diamagnetic linear resonant actuator

A linear vibration actuator is provided, comprising a movable structure, a coil and an elastic suspension system. The elastic suspension system comprises a first and a second elastic sheets, and the first and second elastic sheet respectively comprising a first and a second fixed portions, a first and a second suspension portions, and a first and a second engaging portions. Both first and second suspension portions comprise a bend with an angle greater than 90&#xb0;. The elastic suspension system enables the simple harmonic motion of the movable structure approximating a parallel motion to improve vibration effect without increasing current outputted to the coil, so as to reduce temperature and power consumption of the present invention. As a result, the present invention is able to provide superior vibration effect to portable electronic product and solve the overheating and power consumption problems.

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Hsinchu, Taiwan

Hsiao-Ming Chien