摘要:
The object of the invention is a semiconductor component (1) with at least one lateral, high-breakdown-voltage semiconductor structure consisting of a substrate, a dielectric layer adjacent the substrate, a low-doped semiconductor region on the dielectric layer and heavily doped semiconductor regions in the semiconductor component projecting into the low-doped semiconductor region from the surface of the semiconductor. The invention resides in the fact that fixed charges are stored inside the dielectric layer adjacent the substrate (1a) at least opposite the region of the drift zone which, with the semiconductor component in the blocking state, has a high potential in relation to the substrate. The layer (11) reduces the electric field intensity in the blocking component.
摘要:
An ESD protective clamp device comprised of a two-terminal diode formed in an isolated chip cell. The lower part of this chip cell region contains a buried layer (30) of silicon with P-type dopant, and the upper part is an epitaxial layer (32) also with P-type dopant. An annular (ring-shaped) anode plug segment (34) is formed at the outer reaches of the epitaxial layer with P+ doping. At the interior central region is an N-type plug (42) circular in horizontal cross section and concentric with the annular plug. This central plug serves as the cathode. Electrical connections are made to anode and cathode to provide interconnection with an IC circuit with a MOM capacitor to be protected.
摘要:
An electronic switch (80) having a transistor (T) and a diode (D) formed on a substrate (82) is provided. The electronic switch (80) includes a commong transistor collector and diode cathode region (81) of a first conductivity type formed in the substrate (82). The switch (80) also includes a transistor base region (83) of a second conductivity type formed in a first section of the collector region (81) and a transistor emitter region (84) of the first conductivity type formed in a section of the base region (80) includes a diode anode region (85) formed of the second conductivity type and in a second section of the collector region (81). At least a portion of the anode region (85) is selectively doped with a metallic dopant to provide centers for charge carrier recombination so as to increase the recovery time of the diode (D).
摘要:
An electronic switch (80) having a transistor (T) and a diode (D) formed on a substrate (82) is provided. The electronic switch (80) includes a commong transistor collector and diode cathode region (81) of a first conductivity type formed in the substrate (82). The switch (80) also includes a transistor base region (83) of a second conductivity type formed in a first section of the collector region (81) and a transistor emitter region (84) of the first conductivity type formed in a section of the base region (80) includes a diode anode region (85) formed of the second conductivity type and in a second section of the collector region (81). At least a portion of the anode region (85) is selectively doped with a metallic dopant to provide centers for charge carrier recombination so as to increase the recovery time of the diode (D).
摘要:
In a high-breakdown-voltage diode, a high-concentration p-type layer (2) is selectively formed in an n-type silicon layer (1), and a high-concentration n-type layer (3) is formed in the same separate from the layer (2) by a predetermined distance. An insulation film (8) having a dielectric constant larger than silicon is formed on that portion of the n-type silicon layer (1) which extends between the layers (2, 3), for relaxing concentration of an electric field caused in the surface of the substrate.
摘要:
La présente invention concerne un procédé de prise de contact sur une face d'une puce semiconductrice comprenant une région diffusée (3) délimitée par une couche isolante formant masque (4). Ce procédé comprend les étapes suivantes :
a) former une couche (11) de silicium polycristallin dopé et délimiter cette couche pour qu'elle recouvre la région diffusée et déborde au-dessus du masque ; b) immerger la plaquette dans au moins un bain de dépôt chimique d'un métal de sorte que du métal (12, 13) se dépose sur les surfaces conductrices de la plaquette ; c) immerger la plaquette dans au moins un bain de gravure sélective du masque isolant ; et d) procéder à un recuit des métallisations.
摘要:
A semiconductor device is disclosed which constitutes a protection diode including a second region (23) of first conductivity type beneath a marginal portion (28′) of an interconnection pad which is not utilized for bonding. The second region (23), together with an area (24) of second conductivity type, constitutes the protection diode for protection against a possible negative surge voltage.
摘要:
In einem Halbleiterbauelement wird von einer von einer Hauptfläche (2) des Halbleitersubstrats (1) her eindringenden, seitlich begrenzten hochdotierten Zone (3) und einer die hochdotierte Zone umgebende niedrigdotierte Zone ein pn-Uebergang gebildet, welche an einem Rand der hochdotierten Zone (3) an die Hauptfläche (2) des Halbleitersubstrats (1) tritt. Der Rand der hochdotierten Zone (3) wird von einer Schutzzone (6b) gebildet, deren Dotierungsdichte in einer zur Hauptfläche (2) parallelen Richtung von der hochdotierten Zone (3) gegen den pn-Uebergang hin langsam abfällt. Ein Oberflächendurchbruch des pn-Uebergangs wird dadurch verhindert, dass die Schutzzone (6b) nahe bei der hochdotieren Zone (3) eine maximale Eindringtiefe hat und dass die maximale Eindringtiefe der Schutzzone (6b) grösser ist als die Eindringtiefe der benachbarten hochdotierten Zone (3). Die Schutzzone (6b) hat eine maximale Dotierungsdichte, die 10¹⁵ cm⁻³ im wesentlichen nicht überschreitet, eine Breite die vergleichbar mit einer Dicke der niedrigdotierten Zone ist und eine maximale Eindringtiefe, welche zwischen 40 µm und 80 µm liegt. Die Dotierungsdichte der Schutzzone (6b) fällt in einer zur Hauptfläche (2) parallelen Richtung entweder annähernd linear oder stufenförmig ab.