13.
    发明专利
    未知

    公开(公告)号:AT297068T

    公开(公告)日:2005-06-15

    申请号:AT00964249

    申请日:2000-09-28

    Abstract: An acoustic mirror is described which is formed of at least one first insulating layer, a first metal layer disposed thereon, a second insulating layer disposed thereon and a second metal layer disposed thereon. An auxiliary layer is produced on the first insulating layer whereby a recess extending as far as the first insulating layer is created therein. The first metal layer is substantially deposited and removed by chemical/mechanical polishing until the parts of the first metal layer disposed outside the recess are no longer present. The second metal layer is also produced in a recess with the aid of chemical/mechanical polishing. More than two insulating layers and two metal layers can be provided. The first metal layer and the second metal layer can be produced in the same recess.

    14.
    发明专利
    未知

    公开(公告)号:DE69630501T2

    公开(公告)日:2004-08-05

    申请号:DE69630501

    申请日:1996-08-09

    Abstract: A temperature control apparatus for single wafer etching tools comprising a cathode electrode, an isolation layer, and chuck means, respectfully, which are vertically stacked to support a wafer to be etched. A layer of thermoelectric elements is disposed between the isolation layer and the chuck means. The layer of thermoelectric elements comprises a center area closed loop of connected Peltier elements and an outer area closed loop of connected Peltier elements. The center area closed loop is coupled to a power source and is arranged to correspond to the center area of the wafer. The outer area closed loop is coupled to a power source and is arranged to correspond to the outer area of the wafer. Accordingly, the temperatures associated with each of the specific areas of the wafer are individually controlled by one of the closed loops.

    17.
    发明专利
    未知

    公开(公告)号:DE19750131C2

    公开(公告)日:2002-06-13

    申请号:DE19750131

    申请日:1997-11-13

    Abstract: A micromechanical differential pressure sensor device for measuring a pressure difference between two mutually separated spaces or media, in which two absolute pressure measuring devices are monolithically integrated on a single support substrate, in particular on a semiconductor chip. The absolute pressure measuring devices are preferably fabricated by surface micromachining.

    19.
    发明专利
    未知

    公开(公告)号:AT555056T

    公开(公告)日:2012-05-15

    申请号:AT99952247

    申请日:1999-08-03

    Abstract: The invention relates to a micromechanical sensor and to a corresponding production method that includes the following steps: a) preparing a doped semiconductor wafer; b) applying an epitaxial layer that is doped in such a way that a jump in the charge carrier density in the interface between the semiconductor wafer and the epitaxial layer occurs; c) optionally etching ventilation holes traversing the epitaxial layer and optionally filling the ventilation holes with a sacrificial material; d) depositing at least one sacrificial layer, at least one spacing layer, a membrane and optionally a semiconductor circuit on the top side of the epitaxial layer using a technology known per se, wherein the semiconductor circuit may be applied after the membrane is formed or while depositing the layers required to form the membrane; e) etching a hole on the back part of the sensor, wherein the etching method is selected in such a way that etching advances in the direction of the top side and ceases in the interference between the wafer and the epitaxial layer by changing charge carrier concentration. The invention also relates to the utilization of the micromechanical sensor in pressure sensors or microphones.

    Herstellung einer Vorrichtung mit einem Halbleiterchip

    公开(公告)号:DE102011054377A1

    公开(公告)日:2012-04-12

    申请号:DE102011054377

    申请日:2011-10-11

    Abstract: Ein Verfahren umfasst das Bereitstellen eines Halbleiterchips (10) mit einer ersten Hauptoberfläche (11) und einer der ersten Hauptoberflächen (11) gegenüber liegenden zweiten Hauptoberfläche (12). Ein elektrisch isolierendes Material (13) wird auf der ersten Hauptoberfläche (11) des Halbleiterchips (10) unter Verwendung eines Plasmaabscheidungsverfahrens abgeschieden. Ein erstes elektrisch leitfähiges Material (14) wird auf der zweiten Hauptoberfläche (12) des Halbleiterchips (10) unter Verwendung eines Plasmaabscheidungsverfahrens abgeschieden.

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