Abstract:
PROBLEM TO BE SOLVED: To provide a microelectromechanical device further narrowing a gap, and also to provide its manufacturing method. SOLUTION: In the microelectromechanical device, a resonator 22 and an electrode 21 are faced with each other, and the narrowed gap is arranged between both thermal oxidation films by forming a pair of thermal oxidation films 5, 5 on the opposite surfaces. In a manufacturing process of a microelectromechanical device, after forming a groove 20 as a gap by applying a processing using photolithography and etching to the resonator 22 and an Si layer as an electrode 21, the pair of thermal oxidation films 5, 5 of Si are formed on the opposite surfaces of the groove 20 by applying thermal oxidation treatment to the Si layer. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
It is intended to provide a membrane structure element that can be easily manufactured, has an excellent insulating property and high quality; and a method for manufacturing the membrane structure element. The manufacturing method is for manufacturing a membrane structure element including a membrane formed of a silicon oxide film and a substrate which supports the membrane in a hollow state by supporting a part of a periphery of the membrane. The method includes: a film formation step of forming a heat-shrinkable silicon oxide film 13 on a surface of a silicon substrate 2 by plasma CVD method; a heat treatment step of performing a heat treatment to cause the thermal shrinkage of the silicon oxide film 13 formed on the substrate 1; and a removal step of removing a part of the substrate 2 in such a manner that a membrane-corresponding part of the silicon oxide film 13 is supported as a membrane in a hollow state with respect to the substrate 2 to form a recessed part 4.
Abstract:
It is intended to provide a membrane structure element that can be easily manufactured, has an excellent insulating property and high quality; and a method for manufacturing the membrane structure element. The manufacturing method is for manufacturing a membrane structure element including a membrane formed of a silicon oxide film and a substrate which supports the membrane in a hollow state by supporting a part of a periphery of the membrane. The method includes: a film formation step of forming a heat-shrinkable silicon oxide film 13 on a surface of a silicon substrate 2 by plasma CVD method; a heat treatment step of performing a heat treatment to cause the thermal shrinkage of the silicon oxide film 13 formed on the substrate 1; and a removal step of removing a part of the substrate 2 in such a manner that a membrane-corresponding part of the silicon oxide film 13 is supported as a membrane in a hollow state with respect to the substrate 2 to form a recessed part 4.
Abstract:
The invention relates to methods for producing insulation structures for micromechanical sensors according to a monocrystalline surface technique. According to known methods, silicon structures defined by deep trenches are etched and the lower side thereof facing the substrate is exposed by a release etch step. The filling of said trenches with a dielectrically insulating material, such as silicon dioxide, enables the silicon structure to be solidly clutched on three sides. The invention is based on the fact that instead of filling trenches, thin-walled silicon is converted into an electrically non-conductive material. This can be carried out, for example, by means of thermal oxidation of narrow silicon sections previously exposed by trenches. In a minimal configuration, two trenches (holes) must be etched per section with the desired structural depth. The interlying silicon section must be narrow enough to be able to be fully thermally oxidised.
Abstract:
The invention relates to a micromechanical component comprising: a substrate (1); a monocrystalline layer (10), which is provided above the substrate (1) and which has a membrane region (10a); a cavity (50) that is provided underneath the membrane region (10a), and; one or more porous regions (150; 150'), which are provided inside the monocrystalline layer (10) and which have a doping (n+; p+) that is higher than that of the surrounding layer (10).
Abstract translation:本发明涉及一种微机械部件,该微机械部件包括:衬底(1); 设置在所述衬底(1)上方并且具有膜区域(10a)的单晶层(10); 设置在膜区域(10a)下方的空腔(50),以及; 一个或多个设置在单晶层(10)内并且具有比周围层(10)的掺杂(n +; p +)更高的多孔区域(150; 150')。
Abstract:
The invention relates to providing a columnar structure having a uniform shape and excellent heat resistance and mechanical strength that is formed on a substrate of silicon, a method of preparing the structure, and a DNA separation device prepared by the method. The structure has, on a substrate (11) made of silicon, columns (12) the main surface of which is covered with a thermally oxidized film (16). The columns (12) are made of the thermally oxidized film (16) only or of the thermally oxidized film (16) and silicon. The thermally oxidized film formed on the columns (12) is connected to those formed on the surface or inside of the substrate (11).