Abstract:
A stack of a first and second semiconductor structures is formed. Each semiconductor structure includes: a semiconductor bulk, an overlying insulating layer with metal interconnection levels, and a first surface including a conductive area. The first surfaces of semiconductor structures face each other. A first interconnection pillar extends from the first surface of the first semiconductor structure. A housing opens into the first surface of the second semiconductor structure. The housing is configured to receive the first interconnection pillar. A second interconnection pillar protrudes from a second surface of the second semiconductor structure which is opposite the first surface. The second interconnection pillar is in electric contact with the first interconnection pillar.
Abstract:
A stack of a first and second semiconductor structures is formed. Each semiconductor structure includes: a semiconductor bulk, an overlying insulating layer with metal interconnection levels, and a first surface including a conductive area. The first surfaces of semiconductor structures face each other. A first interconnection pillar extends from the first surface of the first semiconductor structure. A housing opens into the first surface of the second semiconductor structure. The housing is configured to receive the first interconnection pillar. A second interconnection pillar protrudes from a second surface of the second semiconductor structure which is opposite the first surface. The second interconnection pillar is in electric contact with the first interconnection pillar.
Abstract:
A phase-change memory includes a strip of phase-change material that is coated with a conductive strip and surrounded by an insulator. The strip of phase-change material has a lower face in contact with tips of a resistive element. A connection network composed of several levels of metallization coupled with one another by conducting vias is provided above the conductive strip. At least one element of a lower level of the metallization is in direct contact with the upper surface of the conductive strip.
Abstract:
A three-dimensional integrated structure includes a first integrated circuit having a substrate assembled in an interlocking manner with a second integrated circuit having a substrate. The substrate of the first integrated circuit comprises first pores separated by first partitions, and the substrate of the second integrated circuit comprises second pores separated by second partitions. The first partitions interlock with the second pores and the second partitions interlock with the first pores so as to define at least one region bounded by the two substrates. A phase-change material is retained within the at least one region.
Abstract:
An assembly of semiconductor wafers/chips wherein the adjacent surfaces of the two wafers/chips comprise an insulating layer having opposite copper pads inserted therein. The insulating layer is made of a material selected from the group including silicon nitride and silicon carbon nitride.
Abstract:
A method for forming an integrated circuit including the steps of: forming electronic capponents on a first surface of a substrate; forming a stack of interconnection levels on the first surface, each interconnection level including conductive tracks separated by an insulating material; forming at least one hole from a second surface of the substrate, opposite to the first surface, the hole stopping on one of the conductive tracks; depositing, on the walls and the bottom of the hole, a conductive layer and filling the remaining space with a filling material; and forming, in an interconnection level or at the surface of the interconnection stack, and opposite to said at least one hole, at least one region of a material having a modulus of elasticity greater than 50 GPa and an elongation at break greater than 20%, insulated from the conductive tracks.
Abstract:
An integrated circuit chip includes a substrate die and integrated circuits and a layer incorporating a front electrical interconnect network formed on a front face of the substrate die. A local electrical connection via made of an electrically conductive material is formed in a hole of the substrate die. The via is linked to a connection portion of the electrical interconnect network. An electrical connection pillar made of an electrically conductive material is formed on a rear part of the electrical connection via. A local external protection layer at least partly covers the electrical connection via and the electrical connection pillar.
Abstract:
A stack of a first and second semiconductor structures is formed. Each semiconductor structure includes: a semiconductor bulk, an overlying insulating layer with metal interconnection levels, and a first surface including a conductive area. The first surfaces of semiconductor structures face each other. A first interconnection pillar extends from the first surface of the first semiconductor structure. A housing opens into the first surface of the second semiconductor structure. The housing is configured to receive the first interconnection pillar. A second interconnection pillar protrudes from a second surface of the second semiconductor structure which is opposite the first surface. The second interconnection pillar is in electric contact with the first interconnection pillar.
Abstract:
A three-dimensional integrated structure includes a first integrated circuit having a substrate assembled in an interlocking manner with a second integrated circuit having a substrate. The substrate of the first integrated circuit comprises first pores separated by first partitions, and the substrate of the second integrated circuit comprises second pores separated by second partitions. The first partitions interlock with the second pores and the second partitions interlock with the first pores so as to define at least one region bounded by the two substrates. A phase-change material is retained within the at least one region.
Abstract:
A three-dimensional integrated structure is formed from a first integrated circuit with a first cavity filled with a first conductive material and a second integrated circuit with a second cavity filled with a second conductive material, the second cavity facing the first cavity. The filled first cavity forms a first element and the filled second cavity forms a second element, the first and second elements separated from each other by a cavity. The first and second conductive materials have different thermal expansion coefficients. A contact detection circuit is electrically connected to the filled first and second cavities, and is operable to sense electrical contact between the first and second conductive materials in response to a change in temperature.