Abstract:
A method for performing atomic layer etching (ALE) on a substrate, including the following method operations: performing a surface modification operation on a surface of the substrate, the surface modification operation configured to convert at least one monolayer of the substrate surface to a modified layer; performing a removal operation on the substrate surface, the removal operation configured to remove the modified layer from the substrate surface, wherein removing the modified layer occurs via a ligand exchange reaction that is configured to volatilize the modified layer; performing, following the removal operation, a plasma treatment on the substrate surface, the plasma treatment configured to remove residues generated by the removal operation from the substrate surface, wherein the residues are volatilized by the plasma treatment; repeating the foregoing operations until a predefined thickness has been etched from the substrate surface.
Abstract:
It is an object of the present invention to manufacture a micromachine having a plurality of structural bodies with different functions and to shorten the time required for sacrifice layer etching in a process of manufacturing the micromachine. Another object of the present invention is to prevent a structural layer from being attached to a substrate after the sacrifice layer etching. In other words, an object of the present invention is to provide an inexpensive and high-value-added micromachine by improving throughput and yield. The sacrifice layer etching is conducted in multiple steps. In the multiple steps of the sacrifice layer etching, a part of the sacrifice layer that does not overlap with the structural layer is removed by the earlier sacrifice layer etching and a part of the sacrifice layer that is under the structural layer is removed by the later sacrifice layer etching.
Abstract:
A technique (400) for manufacturing a micro-electro mechanical structure includes a number of steps. Initially, a cavity is formed into a first side of a handling wafer (404), with a sidewall of the cavity forming a first angle greater than about 54.7 degrees with respect to a first side of the handling wafer at an opening of the cavity. Then, a bulk etch is performed on the first side of the handling wafer to modify the sidewall of the cavity to a second angle greater than about 90 degrees (406), with respect to the first side of the handling wafer at the opening of the cavity. Next, a second side of a second wafer is bonded to the first side of the handling wafer (408).
Abstract:
The invention relates to a method for the plasma free etching of silicon with an etching gas ClF3 (15) or XeF2 and to the use thereof. The silicon comprises one or several areas (20) which are to be etched, as a layer on a substrate (1) or as a substrate material. The silicon is transformed into a mixing semiconductor SiGe (40) by introducing germanium (30, 35) and is etched by supplying etching gas ClF3 (15) or XeF2. The germanium (30, 35) is introduced and the etching gas ClF3 (15) or XeF2 is supplied in a temporally parallel or alternating manner. The invention relates to, in particular, the introduction of germanium (30, 35) by implanting germanium-ions (35) into the silicon.
Abstract:
A system and method for manipulating the structural characteristics of a MEMS device include etching a plurality of holes into the surface of a MEMS device, wherein the plurality of holes comprise one or more geometric shapes determined to provide specific structural characteristics desired in the MEMS device.
Abstract:
A technique (400) for manufacturing a micro-electro mechanical structure includes a number of steps. Initially, a cavity is formed into a first side of a handling wafer (404), with a sidewall of the cavity forming a first angle greater than about 54.7 degrees with respect to a first side of the handling wafer at an opening of the cavity. Then, a bulk etch is performed on the first side of the handling wafer to modify the sidewall of the cavity to a second angle greater than about 90 degrees (406), with respect to the first side of the handling wafer at the opening of the cavity. Next, a second side of a second wafer is bonded to the first side of the handling wafer (408).
Abstract:
A method for performing atomic layer etching (ALE) on a substrate, including the following method operations: performing a surface modification operation on a surface of the substrate, the surface modification operation configured to convert at least one monolayer of the substrate surface to a modified layer; performing a removal operation on the substrate surface, to remove the modified layer from the substrate surface, wherein removing the modified layer includes exposing the substrate surface to a metal complex, such that a ligand exchange reaction occurs between the metal complex and converted species of the modified layer; performing, following the removal operation, a plasma treatment on the substrate surface, the plasma treatment configured to remove residues formed from the exposure of the substrate surface to the metal complex, wherein the residues are volatilized by the plasma treatment; repeating the foregoing operations until a predefined thickness has been etched from the substrate surface.
Abstract:
A system and method for manipulating the structural characteristics of a MEMS device include etching a plurality of holes into the surface of a MEMS device, wherein the plurality of holes comprise one or more geometric shapes determined to provide specific structural characteristics desired in the MEMS device.