Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming MEMS/NEMS made of monocrystalline silicon using SOI technology. SOLUTION: The method includes: a step of forming a monocrystalline first stop layer on a monocrystalline layer of a first substrate; a step of epitaxially growing a monocrystalline mechanical layer 3 on the first stop layer out of at least one material that is different from that of the stop layer; a step of forming a sacrificial layer 4 on the mechanical layer 3 out of a material that is suitable for being etched selectively relative to the mechanical layer 3; a step of forming a bonding layer 50 on the sacrificial layer 4; a step of bonding a second substrate 6 on the bonding layer 50; and a step of eliminating the first substrate and the stop layer to reveal the surface 3 1 of the mechanical layer 3 opposite from the sacrificial layer 4; wherein an active element is formed with at least a portion of the mechanical layer 3. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a substrate which makes compatible the epitaxial growth of silicon or the other single crystalline material, and has a sacrificial layer having favorable selectivity for chemical etching without being limited by its thickness. SOLUTION: A method of manufacturing a component from an inhomogeneous substrate including first and second parts of at least one type of a single crystalline material and a sacrificial layer formed as a stack formed of at least one single crystalline Si layer located between two single crystalline SiGe layers. The method includes a step of forming at least one opening 20 in the stack located between the first and second parts of the single crystalline material and in the first and/or second part and in a first and/or second SiGe layer so as to reach the Si layer, and a step of removing all or part of the Si layer through the opening. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To achieve an excellent sidewall shape together with high perpendicularity in the anisotropic dry etching of silicon having an etching stop layer. SOLUTION: A method of manufacturing a silicon structure has step (c) of etching a silicon region using a low-speed etching condition having the etching speed of the condition of the lowest etching speed among transition etching conditions through etching step (b) using the transition etching condition that the etching speed lowers with the lapse of time from the etching speed of a high-speed etching condition before the place of the highest etching speed in the silicon region is etched up to the etching stop layer by step (a) of performing etching using the high-speed etching condition in the step of dry etching by so-called gas switching. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of selective etching improved by using an etch stop layer. SOLUTION: Fabrication of a MEMS device such as an interferometric modulator is improved by using an etch stop layer 44 between a sacrificial layer 46 and a mirror layer 38. The etch stop can reduce undesirable over-etching of the sacrificial layer and the mirror layer. The etch stop layer 44 may also serve as a barrier layer, buffer layer, and/or template layer. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a microstructure having thin wall sections formed with high accuracy with respect to thickness dimensions. SOLUTION: The method includes a step (b) of forming the thin wall sections by subjecting a material substrate having a laminated structure including a first conductor layer 101, a second conductor layer 102, a third conductor layer 103, a first insulation layer 104 which has pattern shapes including areas for masking the thin wall section points to be worked to the thin wall sections in the second conductor layer 102 and is interposed between the first conductor layer 101 and the second conductor layer 102 and a second insulation layer 105 which has the pattern shapes including the thin wall section points in the second conductor layer 102 in the mask region and is interposed between the second conductor layer 102 and the third conductor layer 103 to etching treatment from the first conductor layer 101 side down to the second insulation layer 105 through the mask patterns 58 including the points corresponding to the thin wall section points in the non-mask region. COPYRIGHT: (C)2004,JPO