Abstract:
A substrate is provided. The substrate includes a plurality of devices disposed in the substrate, a plurality of contact pads disposed on a surface of the substrate and electrically connected to the devices, and a surface dielectric layer positioned on the surface of the substrate. Thereafter, a surface treatment process including at least a plasma etching process is performed. Subsequently, at least a plasma enhanced chemical vapor deposition (PECVD) process is performed to form a dielectric layer on a surface dielectric layer. The PECVD process is performed in a high frequency/low frequency alternating manner. Following that, a masking pattern on the dielectric layer is formed, and an anisotropic etching process is carried out to form a plurality of openings corresponding to the contact pads in the dielectric layer. The openings expose the contact pads, and each opening has an outwardly-inclined sidewall.
Abstract:
The present invention relates to producing ultra flat micro surfaces suitable, for instance, for micro-mirrors. In particular, it relates to low pressure chemical mechanical planarization (CMP) of a partially cured sacrificial layer.
Abstract:
A novel porous film is disclosed comprising a network of silicon columns in a continuous void which may be fabricated using high density plasma deposition at low temperatures, i.e., less than about 250 null C. This silicon film is a two-dimensional nano-sized array of rodlike columns. This void-column morphology can be controlled with deposition conditions and the porosity can be varied up to 90%. The simultaneous use of low temperature deposition and etching in the plasma approach utilized, allows for the unique opportunity of obtaining columnar structure, a continuous void, and polycrystalline column composition at the same time. Unique devices may be fabricated using this porous continuous film by plasma deposition of this film on a glass, metal foil, insulator or plastic substrates.
Abstract:
La présente invention concerne un procédé de fabrication de microcanaux sur un support, et un support comprenant ces microcanaux, trouvant notamment son application à la fabrication de supports microstructurés pour des systèmes microéiectroniques, microfluidiques, et/ou micromécaniques. Le procédé comprend une étape (a) de réalisation d'au moins un ou d'au moins deux motifs 2 à ia surface d'une couche inférieure 1, et une étape (b) de dépôt, par-dessus la couche inférieure et le motif ou les motifs, d'une couche 3 en matériau polymère obtenue par polymérisation, dans un réacteur de dépôt chimique en phase vapeur assisté, éventuellement à distance, par plasma (PECVD, éventuellement RPECVD), d'un monomère organique ou organométallique comprenant des fonctions siloxanes, par exemple du tétraméthyldisiloxane. La couche en matériau polymère est déposée en sorte de créer, à la place du motif et après révélation par décomposition de ce motif, ou entre les deux motifs sans révélation-décomposition, un canal 4a, 4b, 4c, 4d fermé sur au moins une partie de sa longueur.
Abstract:
A novel porous film (3) is disclosed comprising a network of silicon columns in a continuous void which may be fabricated using high density plasma deposition at low temperatures, i.e., less than about 250 DEG C. This silicon film is a two-dimensional nano-sized array of rodlike columns. This void-column morphology can be controlled with deposition conditions and the porosity can be varied up to 90 %. The simultaneous use of low temperature deposition and etching in the plasma approach utilized, allows for the unique opportunity of obtaining columnar structure, a continuous void, and polycrystalline column composition at the same time. Unique devices may be fabricated using this porous continuous film by plasma deposition of this film on a glass, metal foil, insulator or plastic substrates (5).
Abstract:
The invention relates to a method for producing trench-like depressions (24) in the surface of a wafer (27), in particular a silicon wafer, by means of plasma etching, said depressions (24) being produced by alternating between a passivating and an etching process. A polytetrafluoroethylene-like protective layer (30) is provided for each depression (24) in its final shape.
Abstract:
Des sites de polymère sont formés sur un support (2). Ces sites sont soumis à un plasma de dépôt de matériau diélectrique (3) et réagissent préférentiellement avec ce plasma de manière à former des ouvertures (6) au niveau desdits sites. Un réseau de motifs est alors formé dans le matériau diélectrique (3) et/ou dans le polymère (4).
Abstract:
A novel porous film is disclosed comprising a network of silicon columns in a continuous void which may be fabricated using high density plasma deposition at low temperatures, i.e., less than about 250 ° C. This silicon film is a two-dimensional nano-sized array of rodlike columns. This void-column morphology can be controlled with deposition conditions and the porosity can be varied up to 90%. The simultaneous use of low temperature deposition and etching in the plasma approach utilized, allows for the unique opportunity of obtaining columnar structure, a continuous void, and polycrystalline column composition at the same time. Unique devices may be fabricated using this porous continuous film by plasma deposition of this film on a glass, metal foil, insulator or plastic substrates.