Abstract:
The invention relates to a deep insulating trench, comprising side walls (11) and a base (10), embodied in a semiconductor substrate (1). The side walls (11) and the base (10) are coated with an electrically insulating material (12) which defines an empty cavity (13) and forms a plug (14) to seal the cavity (13). The side walls (11) are embodied with a neck (15) for determining the position of the plug (15) and a first section (16) which tapers out towards the neck (15) with increasing separation from the base (10). The above is particularly suitable for application in bipolar circuits and BiCMOS.
Abstract:
The method involves forming air-gap (C1) between interconnection units (11-13) above a portion regulated of a surface of a substrate (100) inside an interconnection layer that has a silicon-di-oxide (1) extending above an intermediary layer of a permeable material (2). The air-gap is formed by retraction of a part of the silicon-di-oxide by keeping the material in contact with a retraction agent of the silicon-di-oxide. An independent claim is also included for an integrated electronic circuit.
Abstract:
The present invention relates to an integrated-circuit device and to a method for fabricating an integrated-circuit device with an integrated fiuidic-cooling channel. The method comprises forming recesses in a dielectric layer sequence at desired lateral positions of electrical interconnect segments and at desired lateral positions of fiuidic-cooling channel segments. A metal filling is deposited in the recesses of the dielectric layer sequence so as to form the electrical interconnect segments and to form a sacrificial filling in the fiuidic-cooling channel segments. Afterwards, the sacrificial metal filling is selectively removed from the fiuidic- cooling channel segments.
Abstract:
The production of an integrated circuit incorporating an insulating gaseous layer totally separating at least two selected tracks of a level of metallization of row i (Mi) comprises: (a) realizing the metallization of row I by inserting a sacrificial material (MSi) between the selected tracks at this level; (b) realizing, in the material of the insulating inter-tracks (IMDi+1) separating the tracks of the level of metallization of row i+1 and in the inter-way insulating material (ILDi+1) separating the interconnection contacts at the level of interconnection of row I+1, some shafts (CH) emerging in the sacrificial material; and (c) eliminating the sacrificial material across these shafts. An Independent claim is also included for an integrated circuit incorporating an insulating gaseous layer totally separating at least two tracks of a level of metallization of the circuit (L1, L2).
Abstract:
The integrated chip inductance has a number of line conductors (L1 to L6) which are parallel and having an optimized width. Each line conductor is formed within the thickness of an isolating layer (20,23,27). The lines are interconnected by a perpendicular conductor segment.
Abstract:
The fabrication of a metal plate capacitor in the metallisation levels above an integrated circuit consists of depositing an insulating layer (11) of between 0.5 and 1.5 microns on the surface of an integrated circuit (10). Method then involves grooving the insulating layer to form slabs (12), depositing and smoothing a metallic material (14) to form conducting lines (L1, L2, L3, L4) in the slabs, locally drawing the insulating layer to eliminate all the gaps separating two conducting lines, depositing a dielectric layer (16) and depositing and engraving a second metallic material (17) to at least completely fill the inter-line gaps.
Abstract:
Capacitive structure (20) on a Si substrate (10) comprises first (1) and second (3) electrode layers and dielectric layer (2) comprising a homogeneous combination of molecules of at least two dielectrics with permittivities ( iota ) behaving oppositely as a function of electric field. The proportion of each dielectric is empirically chosen so that capacitance varies as little as possible with voltage. The dielectric of the dielectric layer (2) has formula SiOxNy, where x is different from y. The material of the first (1) and second (2) electrode layers is selected from aluminum, copper, tungsten, titanium, titanium nitride and their alloys. Independent claims are given for: (a) a dielectric comprising a homogeneous combination of molecules of at least two dielectrics with permittivities ( iota ) behaving oppositely as a function of electric field, and where the proportion of each dielectric in the combination is empirically chosen such that the combination has a permittivity whose variation as a function of electric field is as low as possible; and (b) a method of production of the above capacitive structure.