Abstract:
PROBLEM TO BE SOLVED: To provide a method to form a high performance hetero-junction bipolar transistor. SOLUTION: The invention includes a process to form two pairs of spacers at both ends of an emitter pedestal. After a first pair of spacers 130 is formed, a first outer base region 100 is formed at both ends of an intrinsic base. A second pair of spacers 160 is formed above the first pair of spacers 130. Then, a second outer base region 140 is formed at both ends of the intrinsic base. Two pairs of spacers enable the first outer base and the second outer base to have different widths. This brings about a structure of complex outer base that is adjacent to an emitter 22 and not adjacent to a collector 20 and consequently a base parasitic resistance reduces with the reduction of parasitic capacitance between the collector and outer base.
Abstract:
PROBLEM TO BE SOLVED: To provide an element structure and a method for manufacturing the same for suppressing an increase of an unnecessary capacitance in the element as small as possible and for improving a transistor characteristic. SOLUTION: In an integrated bi-polar circuit element, a stepped collector dopant profile reduces a transit time and a parasitic capacitance between an emitter and a collector due to a minimum increase of the parasitic capacitance. A shallow implantation reduces a width of a space charge region between a base and the collector, reduces a resistance, and individually optimizes a breakdown characteristic between the collector and the base. A deep implantation, then, links a buried collector to a sub-collector and provides a low resistance path to the sub-collector. The stepped collector dopant profile only gives the lowest effect against a capacitance the collector and the base outside an intrinsic region of the element. The reason is that the higher concentration dopant is compensated by an exogenous dopant outside the intrinsic region or is buried therein.
Abstract:
A method for making a non-self-aligned, heterojunction bipolar transistor includes forming extrinsic base regions (70) with a PFET source/drain implant aligned with the polysilicon in an emitter stack but which are not directly aligned with an emitter opening defined in that stack. This is achieved by making the emitter pedestal (66) wider than the emitter opening. This advantageously removes the dependency of alignment between the extrinsic base regions and the emitter opening, thereby resulting in fewer process steps, reduced thermal cycles, and improved speed.
Abstract:
PROBLEM TO BE SOLVED: To provide a transistor having a minimized parasitic effect. SOLUTION: The transistor includes an emitter, having a recessed extrinsic emitter portion on an intrinsic emitter portion, and an intrinsic base portion electrically contacted with the intrinsic emitter portion and an extrinsic base portion electrically contacted with the intrinsic base portion, and also includes a base electrically isolated from a recessed extrinsic emitter portion by means of a pair of emitter/base spacers and a collector electrically contacted with the intrinsic base portion. The transistor can further include an intrinsic base, having a completely silicide upper surface, until it reaches the emitter/base spacers. The transistor can further include a base window opening in an active region. A method of forming the transistor is also included. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a process which reduces the number of treatment processes, eliminates a problem about an integration of the process such as a via landing on a resistor and a capacitor, and improves a performance and a property to be used. SOLUTION: An insulating oxide layer is accumulated, a lower electrode of the capacitor is formed by accumulating a metal layer, and a dielectric of the capacitor is formed by accumulating a dielectric layer on the metal layer. the dielectric and the lower electrode of the capacitor are patterned by a lithography and etched. The upper electrode of the capacitor is formed on the capacitor dielectric by accumulating the metal layer, a thin-film resistor with different structure is formed at one side of the capacitor, and a nitride etching-stopping cap is accumulated on the upper electrode of the capacitor and on the metal layer of the thin-film resistor. The upper electrode of the capacitor and the thin-film resistor are patterned by lithography and etched. An interlayer dielectric layer ILD is accumulated on the upper electrode of the capacitor and on the thin-film resistor. An ILD wiring level is patterned by the lithography and etched. An integrated copper structure is formed by accumulating a liner layer and a copper layer. A final structure of MIMCAP is formed by chemical-mechanical polishing of the integrated copper structure. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
New device and method are described for accurate etching and removal of thin layer by controlling the surface residence time, thickness and composition of reactant containing film. Etching of silicon dioxide at low pressure using a quartz crystal microbalance is illustrated. Usefulness of the invention in the manufacture of microelectronic devices is shown.
Abstract:
New device and method are described for accurate etching and removal of thin layer by controlling the surface residence time, thickness and composition of reactant containing film. Etching of silicon dioxide at low pressure using a quartz crystal microbalance is illustrated. Usefulness of the invention in the manufacture of microelectronic devices is shown.
Abstract:
New device and method are described for accurate etching and removal of thin layer by controlling the surface residence time, thickness and composition of reactant containing film. Etching of silicon dioxide at low pressure using a quartz crystal microbalance is illustrated. Usefulness of the invention in the manufacture of microelectronic devices is shown.
Abstract:
New device and method are described for accurate etching and removal of thin layer by controlling the surface residence time, thickness and composition of reactant containing film. Etching of silicon dioxide at low pressure using a quartz crystal microbalance is illustrated. Usefulness of the invention in the manufacture of microelectronic devices is shown.
Abstract:
New device and method are described for accurate etching and removal of thin layer by controlling the surface residence time, thickness and composition of reactant containing film. Etching of silicon dioxide at low pressure using a quartz crystal microbalance is illustrated. Usefulness of the invention in the manufacture of microelectronic devices is shown.