摘要:
The invention relates to an integrated circuit comprising a vertical transistor having an emitter comprising at least one zone (12), a base (2) having a base contacting region (15) adjoining a major surface of the integrated circuit, and a collector (5). An improved inverse current amplification is obtained in the case in which the overall thickness of the base is less than or equal to the diffusion length of the minority charge carriers in these regions, when the ratio between the surface Sx of a base contacting region (15) and the surface SM of a base contact window region is at least equal to 10, and when the base contacting region (15) has a surface smaller than 5 times that of the emitter region.
摘要:
A method of forming a channel stopper in a semiconductor structure containing a substrate including the steps: forming a protective layer of material of a predetermined thickness over a portion of said substrate; implanting ions through said protective layer using a dosage of at least 1x10¹⁵ ions/cm² to form a channel stop region in said substrate beneath said protective layer; then annealing said structure before the following oxidizing step; then, oxidizing said structure to form an oxide layer over said portion of said substrate to a thickness no greater than substantially 1 micrometer (micron), thereby to minimize the lateral encroachment of said oxide material, where the thickness of said protective layer is such that said implanting, annealing, and oxidizing does not cause stacking faults in said channel stop region.
摘要:
The invention is to form an intrinsic base layer (16) by doping an impurity in the emitter polysilicon electrode (15) into the intrinsic base region (16) of the surface of a semiconductor substrate (1) by heat treatment through the emitter lead-out part hole (14) self-aligned to the base lead-out electrode (7). Thus, beneath the insulation film of the substrate surface between the base lead-out part hole and emitter lead-out part hole (14), the outer marginal part of the intrinsic base layer (16) and the inner marginal part of the extrinsic base layer (11) overlap uniformly. Still more, since the diffusion of the impurity by heat treatment is very fast in the polysilicon emitter electrode as compared with that in the silicon substrate, an extremely shallow intrinsic base layer (16) may be formed.
摘要:
La présente invention concerne un circuit intégré à transistor vertical. On obtient un transistor ayant une amplification de courant beta notablement supérieure à un transistor classique grâce au fait que l'émetteur (5) dudit transistor présente une épaisseur et un niveau de dopage tels que la longueur de diffusion des porteurs minoritaires de charge injectés verticalement dans ce dernier est supérieure ou égale à l'épaisseur de l'émetteur (5), et que la région de contact de l'émetteur est si faible que pendant le fonctionnement, le courant total des porteurs minoritaires de charge injectés depuis la base dans la région d'émetteur est bien plus faible que la densité de courant des porteurs minoritaires injectés depuis la base dans la région d'émetteur au-dessous de la région de contact d'émetteur, multipliée par la surface totale de la région d'émetteur.
摘要:
A new sub-micron bipolar transistor structure is proposed which utilizes narrow horizontal conducting layers between the edges of the active areas and the associated metal contacts. This structure allows the formation of a completely vertical transistor structure and eliminates the need for the extended buried collector and collector reach-through diffusion regions.
摘要:
Die Bipolartransistorstruktur weist eine vertikale Emitter-Basis-Kollektorfolge auf, in der der Emitter (13) über einen Emitteranschlußbereich (18) mit einem metallischen Emitterkontakt (19) verbunden ist. Der Emitteranschlußbereich (18) erstreckt sich über den Emitter (13) hinaus auf die Oberfläche des die Bipolartransistorstruktur enthaltenden Substrats (10) Der Emitterkontakt (19) überdeckt den Emitteranschlußbereich (18) nur teilweise, so daß der Emitter (13) im Bereich der vertikalen Emitter-Basis-Kollektorfolge nicht unterhalb des Emitterkontakts (19) liegt. Der Emitteranschlußbereich (18) ist im Bereich der vertikalen Emitter-Basis-Kollektorfolge lichtdurchlässig und in diesem Bereich auch nur von lichtdurchlässigen Schichten (21) bedeckt, so daß ein direktes Einstrahlen von Licht in den aktiven Transistorbereich möglich ist. Insbesondere Bipolartransistorstrukturen, die in einem Doppel-Polysilizium-Prozeß selbstjustiert gebildet sind, sind zur Verwendung als Fototransistoren zur Detektion von optischen Datenraten im Gbit/s-Bereich direkt innerhalb hochintegrierter Silizium-Bipolarschaltungen geeignet.
摘要:
A bipolar transistor device according to the present invention comprises a collector region (112, 116) of a first conductivity type formed on a semiconductor substrate (110), a base region (118) of a second conductivity type formed on the collector region, a mesa type emitter region (120, 122, 124) of the first conductivity type formed on the base region, a base electrode (138) formed on the base region and separated from a bottom portion of the mesa type emitter region, a resin layer (146) formed on the base electrode and covering a side face of the emitter region and the base region exposed between the base electrode and the bottom portion of the emitter region, and an emitter electrode (136) overlapping at its end portion with the base electrode with the resin layer being interposed.