摘要:
A process for manufacturing an organic mask for the microelectronics industry, including forming an organic layer on a substrate; forming an inorganic mask on the organic layer; and etching selectively the organic layer through the inorganic mask. Furthermore, forming the inorganic mask includes forming at least a first auxiliary layer of a first inorganic material on the organic layer; forming a mask layer of a second inorganic material different from the first inorganic material on the first auxiliary layer; and shaping the mask layer using a dual-exposure lithographic process.
摘要:
A method for manufacturing semiconductor-integrated electronic circuits includes: depositing an auxiliary layer on a substrate; depositing a layer of screening material on the auxiliary layer; selectively removing the layer of screening material to provide a first opening in the layer of screening material and expose an area of the auxiliary layer; and removing this area of the auxiliary layer to form a second opening in the auxiliary layer, whose cross-section narrows toward the substrate to expose an area of the substrate being smaller than the area exposed by the first opening.
摘要:
The process for the fabrication of an electronic device has the steps of forming a layer to be etched on top of a substrate in a wafer of semiconductor material; depositing a masking layer; and carrying out a plasma etch to define the geometry of the layer to be etched. The masking layer is made so as to be conductive, at least during one part of the etching step; in this way, the electrons implanted on the top part of the masking layer during plasma etching can recombine with the positive charges which have reached the layer to be etched. The recombination of the charges makes it possible to prevent damage from plasma resulting from the formation of parasitic electric currents which are detrimental to the electronic device itself.
摘要:
The process described requires the formation of floating-gate non-volatile memory cells entirely similar in structure to those produced by known processes. The process comprises an annealing treatment at relatively low temperature (430.degree. C.) to repair damage due to plasma treatments. To obtain threshold voltage values for the cells close to the theoretical values, especially for cells with particularly extended interconnections, the cells are subjected to ultraviolet radiation before the annealing treatment, in order to neutralize any electrical charges present in the floating-gate electrodes of the cells.
摘要:
The method prevents oxidation or contamination phenomena of conductive interconnection structures in semiconductor devices and includes providing a layer of semiconductor or oxide base, a conductive layer or stack on the base layer, and an antireflection coating (ARC) layer on the conductive layer or stack. The method provides a thin dielectric covering layer on the antireflection coating layer to fill or cover the microfissures existing in the antireflection coating layer.
摘要:
The method prevents oxidation or contamination phenomena of conductive interconnection structures in semiconductor devices and includes providing a layer of semiconductor or oxide base, a conductive layer or stack on the base layer, and an antireflection coating (ARC) layer on the conductive layer or stack. The method provides a thin dielectric covering layer on the antireflection coating layer to fill or cover the microfissures existing in the antireflection coating layer.
摘要:
A method (300) and a corresponding apparatus for detecting a leak of external air into a plasma reactor are proposed. The method includes: establishing (340) a plasma inside the reactor, the plasma having a composition suitable to generate at least one predetermined compound when reacting with the air, detecting (345) a light emission of the plasma, and analyzing (350-375) the light emission to identify the presence of the at least one predetermined compound.
摘要:
A method enhances selectivity between a film of a light-sensitive material and a layer to be subjected to etching in the course of fabrication processes of an electronic semiconductor device starting from a semiconductor material wafer. The method includes radiating the wafer with an ion beam subsequently to depositing the layer to be etched and defining a circuit pattern on the film of light-sensitive material. An alternative method exposes the wafer to a non-reactive gas medium under plasma rather than radiating the wafer with an ion beam.