Abstract:
The invention concerns a micromechanical component comprising a substrate (17) whereon is deposited a micromechanical functional layer (15) made of a first material. The invention is characterized in that the functional layer (15) includes first and second zones (15a, 15c) which are linked by a third zone (15b; 220a,b; 320a,b; 420a-d; 520; 520a-h) made of a second material (20). At least one of the zones (15a or 15b; 220a,b; 320a,b; 420a-d; 520; 520a-h or 15c) forms part of a mobile structure (32) which is suspended above the substrate (17). The invention also concerns a method for producing such a micromechanical component.
Abstract:
The invention relates to a single crystal doped silicon microstructure comprising at least one functional element (2.1, 2.2) and placed in a substrate (1). Also disclosed is the method for producing said microstructure. According to the invention, the functional element (2.1, 2.2) is mechanically and electrically separated from the substrate on all sides by means of insulating gaps (5, 5a), and is connected in at least one position to a first structure (4a) of an electrically conductive layer (S) which is electrically insulated from the substrate (1) by means of an insulating layer (3). The functional element is thereby fixed in position in relation to the substrate (1) by means of said electrically conductive layer. The functional element is extracted from the substrate in such a way that the isolation gaps are present on all sides in relation to the substrate (1). The electrically conductive layer (S) is applied in such a way that it is connected to the functional element by means of contact fingers, fixing the functional element firmly in position.
Abstract:
The MEMS shutter (210) includes a shutter (210) having an aperture part (213, 214), a first spring connected to the shutter (210), a first anchor (232, 234, 238, 240) connected to the first spring (216, 218, 220, 222), a second spring (224, 226, 228, 230) and a second anchor (236, 242) connected to the second spring (224, 226, 228, 230), an insulation film (210c) on a surface of the shutter (210), the first spring (216, 218, 220, 222), the second spring (224, 226, 228, 230), the first anchor (232, 234, 238, 240) and the second anchor (236, 242), the surfaces being in a perpendicular direction to a surface of a substrate (102), and the insulation film (210c) is not present on a surface of the plurality of terminals (104), and a surface of the shutter (210), the first spring (216, 218, 220, 222), the second spring (224, 226, 228, 230), the first anchor (232, 234, 238, 240) and the second anchor (236, 242), the surfaces being in a parallel direction to a surface of the substrate (102) and on the opposite side of the side facing the substrate (102).
Abstract:
A technique for manufacturing a piezoresistive sensing structure (170) includes a number of process steps. Initially, a piezoresistive element (108) is implanted into a first side of an assembly (102,106,104A) that includes a semiconductor material (102,104A). A passivation layer (110A) is then formed on the first side of the assembly (102,106,104A) over the element (108). The passivation layer (110A) is then removed from selected areas on the first side of the assembly (102,106,104A). A first mask is then provided on the passivation layer (110A) in a desired pattern. A beam (152), which includes the element (108), is then formed in the assembly over at least a portion of the assembly (102,106,104A) that is to provide a cavity (103). The passivation layer (110A) provides a second mask, in the formation of the beam (152), that determines a width of the formed beam (152).
Title translation:SCHICHTSYSTEM MIT EINER SILIZIUMSCHICHT UND EINER PASSIVIERSCHICHT,VERFAHREN ZUR ERZEUGUNG EINER PASSIVIERSCHICHT AUF EINER SILIZIUMSCHICHT UND DEREN VERWENDUNG
Abstract:
The invention relates to a layer system comprising a silicon layer (11), at least some sections of whose surface are provided with a passivation layer (17), the latter (17) consisting of a first, at least predominantly inorganic sub-layer (14) and a second sub-layer (15). The latter (15) is composed of an organic compound comprising silicon or a similar material. The second sub-layer (15) in particular takes the form of a self-assembled monolayer. The invention also relates to a method for producing a passivation layer (17) on a silicon layer (11), whereby a first inorganic sub-layer (14) is produced on said layer (11) and a second sub-layer (15), containing an organic compound containing silicon or consisting of said compound, is produced on at least some sections of the first sub-layer (14), whereby the sub-layers form the passivation layer (17). The inventive layer system or the inventive method are particularly suitable for producing cantilever structures in silicon.
Abstract:
The present disclosure pertains to our discovery of a particularly efficient method for etching a multi-part cavity in a substrate. The method provides for first etching a shaped opening, depositing a protective layer over at least a portion of the inner surface of the shaped opening, and then etching a shaped cavity directly beneath and in continuous communication with the shaped opening. The protective layer protects the etch profile of the shaped opening during etching of the shaped cavity, so that the shaped opening and the shaped cavity can be etched to have different shapes, if desired. In particular embodiments of the method of the invention, lateral etch barrier layers and/or implanted etch stops are also used to direct the etching process. The method of the invention can be applied to any application where it is necessary or desirable to provide a shaped opening and an underlying shaped cavity having varying shapes. The method is also useful whenever it is necessary to maintain tight control over the dimensions of the shaped opening.