Abstract:
The invention concerns a method which consists in successively depositing a polymeric sacrificial layer (2), depositing, on at least part of the substrate (1) and the front surface of the sacrificial layer (2), an embedding layer (6), with a thickness greater than that of the sacrificial layer (2) and performing planarization such that the front surfaces of the sacrificial layer (2) and of the embedding layer (6) form a common planar surface. A forming layer (3) of a suspended structure (5) is deposited on the front face of the common planar surface. The planarization can include chemical mechanical polishing and etching the embedding layer (6). Etching the sacrificial layer (2) can be performed by means of a mask, formed on the front surface of a polymer material layer, removed during the planarization step.
Abstract:
A method for integrally fabricated MEMs devices with include micro or nanoparticles by providing a mixture (16) of sacrificial material (12) and a multiplicity of particles (10), disposing the mixture (16) on a substrate (14), fabricating a MEMs structure on the substrate (14) including at least part of the mixture (16), so that at least some of the mixture (16) is enclosed in the MEMs structure, removing the sacrificial material (12), and leaving at least some of the multiplicity of particles (10) substantially free and enclosed in the MEMs structure. The step of fabricating a MEMs structure is quite general and is contemplated as including one or a multiplicity of additional steps for creating some type of structure in which the particles (10), which may be microbeads or nanobeads, are included.
Abstract:
A meso-scale MEMS device having a movable member (51) is formed using standard printed wiring board and high density interconnect technologies and practices. In one embodiment, sacrificial material disposed about the movable member (51) is removed through openings (101, 102) as formed through a cover (91) to form a cavity (121) that retains and limits the freedom of movement of the movable member (51). The movable member can support a reflective surface (224) to thereby provide a mechanism that will support a projection display and/or image scanner (such as a bar code scanner).
Abstract:
According to one embodiment, a movable MEMS component suspended over a substrate is provided. The component can include a structural layer having a movable electrode separated from a substrate by a gap. The component can also include at least one standoff bump attached to the structural layer and extending into the gap for preventing contact of the movable electrode with conductive material when the component moves.
Abstract:
Electrothermal Self-Latching MEMS Switch and Method. According to one embodiment, a microscale switch having a movable microcomponent is provided and includes a substrate having a stationary contact. The switch can also include a structural layer having a movable contact positioned for contacting the stationary contact when the structural layer moves toward the substrate. An electrothermal latch attached to the structural layer and having electrical communication with the movable contact to provide current flow between the electrothermal latch and the stationary contact when the movable contact contacts the stationary contact for maintaining' the movable contact in contact with the stationary contact.
Abstract:
PROBLEM TO BE SOLVED: To provide a sacrificial film pattern having a highly accurate planar shape and a suitable sidewall shape, as well as excellent heat resistance.SOLUTION: A method of manufacturing a micro structure comprises: (i) a step for forming a sacrificial film pattern on a substrate; (ii) a step for forming an inorganic material film on the sacrificial film pattern; and (iii) a step for forming space having a shape of the sacrificial film pattern. In the method, the step (i) includes: (A) a process for forming a sacrificial film using an optical pattern forming sacrificial film forming composition containing either one of a cresol novolac resin or a 1,2-naphthoquinonediazidesulfonate ester compound and a crosslinking agent; (B) a process for irradiating the sacrificial film with a first high energy line; (C) a process for forming a positive sacrificial film pattern by developing; and (D) a process for irradiating the sacrificial film with a second high energy line pattern and heating thereby forming a crosslinkage between cresol novolac resins.