Abstract:
A method for manufacturing a three-dimensional structure (1) includes forming a first structure (20) having a relief pattern on a substrate (10), forming a sacrifice layer (30) on the first structure such that the sacrifice layer can be filled in a concave part (25) of the first structure and the sacrifice layer can cover a surface (23) of a convex part (22) of the first structure on a side opposite to the substrate, forming a second structure (40) having a relief pattern on the sacrifice layer, and a fourth step of removing the sacrifice layer from between the first structure and the second structure, and thereby bringing the second structure into contact with the surface of the first structure.
Abstract:
Substrat microélectronique (400) comportant au moins : - une couche support (102), - une couche supérieure (106) composée d'au moins un semi-conducteur, - une couche intermédiaire (104) composée d'au moins un matériau organique et comportant en outre une ou plusieurs portions (402) de matériau diélectrique dont la dureté est supérieure à celle du matériau organique. Ces portions sont disposées dans la couche de matériau organique et ont une épaisseur sensiblement égale à celle de la couche de matériau organique. La couche intermédiaire (104) est apte à être gravé sélectivement par rapport au semi-conducteur de la couche supérieure et est disposée entre la couche support et la couche supérieure. L'invention décrit également un procédé de réalisation d'un dispositif microélectronique dans la couche supérieure du substrat ci-mentionné, ainsi qu'un procédé d'encapsulation de ce dispositif.
Abstract:
A method of forming a suspended beam in a MEMS process is disclosed. In the process a pit (8) is etched into a substrate (5). Sacrificial material (10) is deposited in the pit (8) and on the surrounding substrate surface. The sacrificial material (10) is then removed from the surrounding substrate surface and from the periphery of the pit (8) so that there is a gap between the sacrificial material and at least two sidewalls of the pit. The sacrificial material is then heated so that it reftows such that the remaining sacrificial material contacts the sidewalls of the pit. Material for the beam (12), which is typically a metal, is then deposited on the substrate surface and the reflowed sacrificial material, and the sacrificial material is then removed to form the suspended beam. The beam could be used as the heating element in an inkjet printer.
Abstract:
The present invention provides fabrication methods using sacrificial materials comprising polymers. In some embodiments, the polymer may be treated to alter its solubility with respect to at least one solvent (e.g., aqueous solution) used in the fabrication process. The preparation of the sacrificial materials is rapid and simple, and dissolution of the sacrificial material can be carried out in mild environments. Sacrificial materials of the present invention may be useful for surface micromachining, bulk micromachining, and other microfabrication processes in which a sacrificial layer is employed for producing a selected and corresponding physical structure.
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. The structural layer is folded.
Abstract:
Embodiments of the present disclosure provide systems and methods for producing micro electro-mechanical device packages. Briefly described, in architecture, one embodiment of the system, among others, includes a micro electro-mechanical device formed on a substrate layer; and a thermally decomposable sacrificial structure protecting at least a portion of the micro electro-mechanical device, where the sacrificial structure is formed on the substrate layer and surrounds a has cavity enclosing an active surface of the micro electro-mechanical devices Other systems and methods are also provided.
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.