Abstract:
A method of fabricating thermal bimorph actuators using high permittivity ferroelectric thin films is disclosed. The device is a thermal can¬ tilever actuator employing barium titanate (BaTiO3) for RF applications. Com¬ pared to electrostatic actuators, this MEMS structure is designed to handle high RF transmitted power while maintaining a high capacitance ratio due to the high permittivity of the ferroelectric thin film employed and without the stiction problems normally associated with other MEMS actuators.
Abstract:
The method of fabricating devices for microelectromechanical systems (MEMS) with electrical components in their sidewalls is applicable for the production of microstructures with various electrical and mechanical properties that can be used for sensing in different technical areas. The method consists of three stages and through numerous repetitions of processes of creation of protective layers, photolithographical patterning, consecutive etching processes and doping via high temperature ion diffusion performed over non-deformable semiconductor basic structures, for example monocrystalline Silicon basic structures, it gives opportunity of building of electrical components in the sidewalls of MEMS devices. The electrical components so obtained can have equal or different parameters and can be disposed in parts of or the whole sidewalls of such devices. With MEMS devices realized according to the claimed method measurements with considerably increased accuracy, precision and sensitivity can be made.
Abstract:
The method of fabricating devices for microelectromechanical systems (MEMS) with electrical components in their sidewalls is applicable for the production of microstructures with various electrical and mechanical properties that can be used for sensing in different technical areas. The method consists of three stages and through numerous repetitions of processes of creation of protective layers, photolithographical patterning, consecutive etching processes and doping via high temperature ion diffusion performed over non-deformable semiconductor basic structures, for example monocrystalline Silicon basic structures, it gives opportunity of building of electrical components in the sidewalls of MEMS devices. The electrical components so obtained can have equal or different parameters and can be disposed in parts of or the whole sidewalls of such devices. With MEMS devices realized according to the claimed method measurements with considerably increased accuracy, precision and sensitivity can be made.
Abstract:
A micro or nano electromechanical transducer device (200) formed on a semiconductor substrate (210) comprises a movable structure (203) which is arranged to be movable in response to actuation of an actuating structure. The movable structure (203) comprises a mechanical structure (204) comprising at least one mechanical layer (204) having a first thermal response characteristic and a first mechanical stress response characteristic, at least one layer (202) of the actuating structure, the at least one layer having a second thermal response characteristic different to the first thermal response characteristic and a second mechanical stress response characteristic different to the first mechanical stress response characteristic, a first compensation layer (206) having a third thermal response characteristic and a third mechanical stress characteristic, and a second compensation layer (207) having a fourth thermal response characteristic and a fourth mechanical stress response characteristic. The first (206) and second (207) compensation layers are arranged to compensate a thermal effect produced by the different first and second thermal response characteristics of the mechanical structure and the at least one layer (202) of the actuating structure such that movement of the movable structure (203) is substantially independent of variations in temperature and to adjust a stress effect produced by the different first and second stress response characteristics of the mechanical structure and the at least one layer (202) of the actuating structure such that the movable structure is deflected a predetermined amount relative to the substrate when the electromechanical transducer device (200) is in an inactive state.
Abstract:
The invention relates to MEMS-based display devices. In particular, the display devices may include actuators having two mechanically compliant electrodes. In addition, bi-stable shutter assemblies and means for supporting shutters in shutter assemblies are disclosed inclusion in the display devices.
Abstract:
본 발명은 MEMS-기반 디스플레이 장치들에 관한 것이다. 구체적으로, 디스플레이 장치들은 2개의 기계적 유연 전극들을 가지는 작동기들을 포함할 수 있다. 게다가, 셔터 어셈블리들 내의 셔터들을 지지하기 위한 쌍안정 셔터 어셈블리들 및 수단들이 디스플레이 장치들 내의 구성요소로서 공개되어 있다.
Abstract:
PURPOSE: A heat-driven micro mirror and an electronic apparatus are provided to prevent the movement of the reflecting position of light on a mirror surface by preventing that the rotary center of the mirror surface is deviated and miniaturizing the size of the mirror surface. CONSTITUTION: A thermally driven micro mirror(10) includes a mirror surface(20) and a supporting structure part(14) supporting the mirror surface and having a laminated structure. The supporting structure part applies electricity and generates heat. The supporting structure part is deflected in the laminated structure by the difference of a thermal expansion coefficient, and the mirror surface is tilted in a certain angle. The supporting structure part is disposed between the mirror surface and an electrode part(30) supplying the electricity. A longitudinal axis(LL) of the supporting structure part is perpendicular to a center axis(CL) of the mirror surface(20). A longitudinal center of the supporting structure part(14) is located in the center axis of the mirror surface.