| Patent application number | Description | Published |
|---|
| 20080280231 | Bounce drive actuator and micromotor - Provided is the design and fabrication of the novel bounce drive actuator (BDA) for the development of a new-type micro rotary motor. Although the scratch drive actuator (SDA) micro motor has been developed more than one decade, such device has limited commercial applications due to its shorter lifetime, high power consumption and sudden reverse rotation. In contrast, present invention proposes an innovative BDA micro rotary motor with different actuating mechanism and improved performance. Several significant investigations shown in this research present that the length of the SDA-plate is longer than 75 μm and the plate length of the BDA is less than 75 μm. Under the same driving power and frequency with SDA-based micro motor, the BDA-based micro rotary motor exhibited a consistent “reverse” rotation and a higher speed. BDA has higher flexural rigidity due to its shorter length of plate; thus, the contact area of the bending BDA-plate and the insulator substrate will substantially be reduced even under the same applied voltage as the priming value of SDA-plate. Furthermore, a novel rib and flange structure design for the improvement of lifetime (>100 hrs) and rotational speed (>30 rpm) of BDA micro motor was also demonstrated in this invention. | 11-13-2008 |
| 20080280387 | Layout design and fabrication of SDA micro motor for low driving voltage and high lifetime application - Provided is a new design and fabrication of scratch drive actuator (SDA) micro rotary motor with low driving voltage and high lifetime characteristics. To substantially reduce the driving voltage from 30˜150 V | 11-13-2008 |
| 20090051243 | Micro actuator - The present invention relates to a micro actuator, which is located on a substrate and includes a plate and a bushing. A rear end of the plate exhibits a tapered triangular shape or an arc-like shape or has at least a bump disposed on a bottom surface of the rear end of the plate, making that a non-planar contact is present between the rear end of the plate and the substrate when both are contacted, so as to effectively reduce the friction and driving voltage and prolong the lifespan of components. | 02-26-2009 |
| 20090066186 | Non-contact actuator - The present invention relates to a non-contact actuator located on a substrate and at least including a plate and a bushing. When a voltage is applied externally, the plate is bent by the attraction of the substrate and won't be contacted with the substrate. A counteraction force is generated when the plate withstands the electrostatic force of the substrate. After the voltage is removed, the counteraction force and an elastic tension generated by recovering from a curved state of the plate to an original state are employed to generate bouncing motion of the plate and the bushing and further proceed step movement of the actuator. Because of no friction between the plate and the substrate, the present invention only requires a rather small voltage and consumes the minimum current so as to lower the driving voltage and reduce the current consumption and defacement of device for longer lifespan. | 03-12-2009 |
| 20090184607 | Micro motor structure - The present invention relates to a micro motor structure, which includes a hub, a rib structure, an inner ring, an outer ring and at least two micro actuators in which a top edge of the hub is projected outwards to form an upper lid having at least two protrusions in form of rectangular tooth, triangle or arc so that the upper lid is in point contact with the inner wall of the inner ring. As such, in spite of collision between the inner ring and the upper lid, when the micro actuators drive the rib structure, the inner ring and the outer ring to rotate, mutual abrasion between the upper lid and the inner ring is alleviated due to the point contact therebetween, thereby prolonging the lifespan of the micro motor. | 07-23-2009 |
| 20090185909 | Self-assembly micro blade - The present invention relates to a self-assembly micro blade applied to a micro fan. The micro fan combines at least a self-assembly micro blade and a motor using an actuator as the main body of the micro fan. The self-assembly micro blade includes at least a movable part of a microstructure, at least an elastic joint provided between an outer ring of the micro fan and the movable part. The elastic joint is composed of a polyimide film, which is heated to contract and generate surface tension by using a reflow process so as to lift up the movable part of the microstructure; moreover, the movable part is bent in a curved form through the elastic link exhibits a multi-layer shape by serially connecting at least two movable parts so as to complete the self assembly of the micro blade, thereby increasing air flow rate and improving air flow length. | 07-23-2009 |
| 20090243427 | Micro motor - The present invention relates to a micro motor including a hub, a rib structure, an inner ring, an outer ring and at least two micro actuators, in which a top edge of the hub is projected outwardly to form a top lid, a plurality of bumps are provided between the rib structure and the top lid, and protruded limiting parts are disposed between the wall of the inner hole of the rib structure and the outer periphery of the hub so that the rib structure is in point contact with the hub and the top lid. Therefore, when the micro actuators drive the rib structure, the inner ring and the outer ring to rotate, mutual abrasion among those parts can be reduced to prolong the lifespan of the micro motor. | 10-01-2009 |
| 20090251809 | Linear micro motor - The present invention relates to a linear micro motor having an forward and backward reciprocating motion. The linear micro motor includes at least two actuators which can be a scratch drive actuator (SDA), a bounce drive actuator (BDA) or a combination thereof. To achieve the reciprocating motion, the linear micro motor is arranged in a way that at least two SDAs are disposed in an opposite manner, at least two BDAs are disposed in an opposite manner, or at least a SDA and at least a BDA are disposed in an identical manner. The linear micro motor of the present invention in accordance with the arrangement of the actuators can be realized to be applicable to a digital camera or camera phone by the advancing and receding linear motion caused by the motion of the actuators to achieve a focus-adjustable liquid crystal lens. | 10-08-2009 |
