摘要:
In a lateral bipolar transistor and a method for producing the same, an emitter layer and a collector layer are disposed on a structured dielectric layer. The structured dielectric layer is located in a plane of a base layer and is interrupted by the base layer in such a way that between the base layer and portions of the structured dielectric layer, the base layer is contacted on one side by the emitter layer and on the opposite side by the collector layer.
摘要:
An acceleration sensor has a proof mass attached by resilient elements, in the form of micromechanical components, in a monocrystalline silicon layer of an SOI (silicon-on-insulator) substrate, the insulator layer of the substrate being removed under the structure which is susceptible to acceleration, in order to enable free mobility of the micromechanical components. Piezoresistors are provided for detecting movement of the proof mass, the piezoresistors supplying electrical signals to an evaluation circuit.
摘要:
An acceleration sensor is produced on a silicon substrate by etching to leave a cantilevered beam of polysilicon with a tip on the substrate projecting toward this beam. Acceleration of the sensor causes the beam to bend, thereby changing the spacing between the tip and the beam, and thereby also changing the tunnel current, which is measured. Electrodes are provided that, given application of a potential thereto, effect an electrostatic compensation of the bending of the beam.
摘要:
A method for producing a bipolar transistor completely surrounded by an insulating trench in a substrate. Insulating regions at the surface of the substrate can be produced by depositing an SiO.sub.2 layer on the basis of thermal decomposition of TEOS and subsequent structuring of the SiO.sub.2 layer. The insulating regions can be employed as a self-aligning mask for the production of a collector terminal and of a substrate terminal.
摘要:
A semiconductor memory device with a phase transformation memory effect includes at least one memory element in a semiconductor substrate, and a cavity arrangement including at least one cavity in spatial proximity to the respective memory element. The cavity is in spatial arrangement with the respective memory element so as to reduce thermal coupling of the respective memory element to the areas surrounding the memory element, which also reduces the thermal conductivity between memory element and the areas surrounding the memory element.
摘要:
An element that prevents the formation of a channel is arranged in a level of the channel region (Kaa) at one of two opposite sidewalls of a semiconductor structure that has a source/drain region (S/D1a) and a channel region (Kaa) of a vertical selection transistor arranged therebelow. The source/drain region as well as a respective word line (W1a) adjoin at both sidewalls. For folded bit lines (B1a), respectively two word lines (W1a) can be formed in the trenches (G2a). The elements of semiconductor structures neighboring along one of the trenches (G2a) are then arranged in alternation at a sidewall of the trench (G2a) and at a sidewall of a neighboring trench (D2a). A storage capacitor can be arranged over a substrate (1a) or can be buried in the substrate (1a). The connection of the selection transistor to a bit line (B1a) can ensue in many ways.
摘要:
A read-only memory cell configuration and a method for its production include a substrate formed of semiconductor material having memory cells disposed in a cell field in a region of a main area. Each memory cell has at least one MOS transistor with a source region, a drain region, a channel region, a gate dielectric and a gate electrode. The drain region is connected to a bit line and the gate electrode is connected to a word line. The MOS transistor is formed by a trench starting at the main area and reaching as far as the source region. Side walls of the trench are disposed at an angle of approximately 45.degree. to approximately 80.degree. relative to the main area and are doped with a doping material of a predetermined conductivity for defining the programming of the MOS transistor.
摘要:
A terminal metallization (8) is applied onto and structured on a layer structure on the upper side of the component, the terminal metallization is applied on the upper side of an insulating layer (7) with an opening on a metallization (6) provided for electrical connection. By filling a hole produced in a covering dielectric with metal, a contact rod (12) seated on this terminal metallization (8) is formed. This contact rod is resiliently movable in a surrounding opening (14) of the component on the free part of the terminal metallization (8) anchored in the layer structure. This enables the reversible contacting of the component to a further component arranged vertically thereto, whereby the planar upper sides lying opposite one another can be brought into intimate contact because the contact rod (12) pressed against a contact (15) of the other component is pressed back into the opening (14) and an adequately firm connection of the contacts is achieved by the spring power of the terminal metallization (8).
摘要:
Manufacturing method for an acceleration sensor on silicon, whereby, following the manufacture of the doped regions required for the electronic function elements, a polysilicon layer is deposited. The polysilicon layer is structured such that a portion of this polysilicon layer forms an electrode (for example, the emitter electrode (9) and the collector electrode (10) of a transistor) and a sensor layer (17) provided as sensor element.