摘要:
A micro mirror structure having an increased driving angle while being driven in high speed. The micro mirror includes a rotatable mirror section that reflects light, a pair of spring sections for supporting the mirror section and serving as a rotational axis for the mirror section when the mirror section is rotationally driven, an oval adjoining section for connecting the mirror section and the pair of spring sections, and a driving section including mobile combs arranged on the adjoining section. A fixed comb is provided above and/or below the mobile combs to correspond to the mobile combs to generate electrostatic force. According to the present invention, by existence of the oval adjoining section, moment can be increased without largely increasing rotational inertia moment. Therefore, a high-speed optical scanner with an increased driving angle can be provided, which is required for a high-resolution laser TV.
摘要:
A rotational micro-electromechanical system (MEMS) having a piezo-resistor sensor is provided. The rotational MEMS device includes a pair of torsion springs that support a stage, four resistors, at least one of the resistors being formed along a center axis of the torsion springs, and electrical signal cables connected to the four resistors, wherein at least one of the torsion springs is formed in a direction on an n-type silicon substrate having a (100) plane, and the resistors formed on the at least one of the torsion springs are formed in a group direction.
摘要:
An actuator having a vertical comb electrode structure is provided. The actuator includes: a stage seesawing in a first direction; a support unit supporting the seesawing motion of the stage; and a stage driving unit including vertical driving comb electrodes extending outward from opposite sides of the stage in the first direction, and vertical fixed comb electrodes disposed on a substrate to alternate with the driving comb electrodes, wherein the fixed comb electrodes include first fixed comb electrodes lower than the driving comb electrodes, insulation layers formed on the first fixed comb electrodes, and second fixed comb electrodes formed on the insulation layers to be higher than bottom surfaces of the driving comb electrodes.
摘要:
Optical scanners having a multi-layered comb electrode structure and methods to increase driving force and angle are provided. The optical scanner includes: a stage which performs a seesaw motion in a first direction; a support unit which supports the seesaw motion of the stage; and a stage driving unit including driving comb electrodes extending outward from opposite sides of the stage in the first direction and fixed comb electrodes extending from the support unit facing the driving comb electrodes such that the driving comb electrodes and the fixed comb electrodes alternate with each other. Each of the stage, the support unit, and the stage driving unit is made of a plurality of conductive layers and insulation layers between the conductive layers.
摘要:
Provided are a biaxial actuator and a method of manufacturing the same. The biaxial actuator includes: a stage unit seesawing in a first direction; a first support unit supporting the stage unit; a stage unit driving unit including first driving comb electrodes outwardly extending from opposite sides of the stage unit in the first direction, and first fixed comb electrodes extending from the first support unit facing the first driving comb electrodes such that the first driving and fixed comb electrodes alternate with each other; a second support unit supporting the first support unit such that the first support unit seesaws in a second direction perpendicular to the first direction; and a first support unit driving unit including second driving comb electrodes installed at the first support unit, and second fixed comb electrodes corresponding to the second driving comb electrodes, wherein the first and second driving comb electrodes and the stage unit are formed at a first level, and the first and second fixed comb electrodes are formed at a second level lower than the first level such that the first and second fixed comb electrodes do not overlap with the first and second driving comb electrodes at a vertical plane.
摘要:
A micro-electro mechanical system (MEMS) scanner. The MEMS scanner includes a first frame rotationally vibrated about an axle according to a low-frequency vertical scan function, a second frame supported coaxially with and rotationally on the first frame, a vibration member disposed between the first frame and the second frame so as to vibrate the second frame with respect to the first frame according to a high-frequency vertical scan function. A MEMS mirror which receives a vertical scan motion of the second frame and simultaneously operates in a rotational vibration mode about an axle according to a high-frequency horizontal scan function so as to two-dimensionally scan a screen with incident light. Therefore, scan lines are uniformly produced in a scanning direction and, thus, pixels can be uniformed arranged across a screen, increasing the vertical resolution of the screen and providing high-quality images.
摘要:
A dual comb electrode structure with spacing for increasing a driving angle of a micro mirror provided by MEMS (Micro-Electro-Mechanical system) structure and a microscanner adopting the same are provided. The dual comb electrode structure includes: a mirror unit for reflecting light; a plurality of movable comb electrodes protruded in both sides of the mirror unit; and a plurality of upper and lower static comb electrodes formed above and below the movable comb electrode so as to be alternated with the plurality of movable comb electrodes formed in both sides of the mirror unit, wherein a spacing between the upper static comb electrode and the movable comb electrode is different from a spacing between the lower static comb electrode and the movable comb electrode.
摘要:
A micro mirror structure having an increased driving angle while being driven in high speed. The micro mirror includes a rotatable mirror section that reflects light, a pair of spring sections for supporting the mirror section and serving as a rotational axis for the mirror section when the mirror section is rotationally driven, an oval adjoining section for connecting the mirror section and the pair of spring sections, and a driving section including mobile combs arranged on the adjoining section. A fixed comb is provided above and/or below the mobile combs to correspond to the mobile combs to generate electrostatic force. According to the present invention, by existence of the oval adjoining section, moment can be increased without largely increasing rotational inertia moment. Therefore, a high-speed optical scanner with an increased driving angle can be provided, which is required for a high-resolution laser TV.
摘要:
A slide opening/closing type mobile device includes a body section including a guide section that has a pair of long holes and is configured so that an interval between the pair of long holes becomes smaller at first, as it goes from one ends towards the other ends of the long holes, and then, becomes larger based on certain starting points; a slider provided with guide rollers movably inserted in the pair of long holes of the guide section in a state of being elastically biased to the outside; a rotation plate rotatably mounted on the slider; and a display section mounted on the rotation plate. The display section is slidable upward and downward with respect to the body section by the slider, and rotates at a predetermined angle by the rotation plate.
摘要:
A liquid crystal on silicon (LCOS) device includes a wafer, glass, and walls formed at opposite ends of an upper surface of the wafer to define a predetermined cell gap between the glass and the wafer. A thin piezo-electric layer is attached onto a surface of the wafer and an electrode is applied with external power to expand and/or contract the thin piezo-electric layer. The LCOS device further includes a voltage detection unit for detecting a voltage generated by the deformation of the thin piezo-electric layer; and a feedback control unit for compensating for deformation of the thin piezo-electric layer according to the voltage detected by the voltage detection unit. The LCOS device achieves uniformity of the cell gap by adjusting the voltage level of the thin piezo-electric layer after bonding the wafer and the glass, and therefore, spacers are not required.