Abstract:
This hybrid circuit comprises a substrate (20) and at least one elementary circuit (22) which comprises a first facet and a second facet, being hybridized via this second facet to a facet of the substrate. According to the invention, this facet of the substrate and each elementary circuit are coated with a first layer (24), the first layer is removed from the first facet of this elementary circuit, this first facet and the subsisting part of the first layer are coated with a second layer (28), and this subsisting part and the second layer covering it are removed. Application to obtaining an antireflection or metal layer on a chip.
Abstract:
The invention relates to a method for producing a matrix of electronic components, comprising a step of producing an active layer on a substrate, and a step of individualizing the components by forming trenches in the active layer at least until the substrate emerges. The method comprises steps of depositing a layer of functional material on the active layer, depositing a photosensitive resin on the layer of material in such a way as to fill said trenches and to form a thin film on the upper face of the components, at least partially exposing the resin to radiation while underexposing the portion of resin in the trenches, developing the resin in such a way as to remove the properly exposed portion thereof, removing the functional material layer portion that shows through after the development step, and removing the remaining portion of resin.
Abstract:
The invention relates to a method for producing a matrix of electronic components, comprising a step of producing an active layer on a substrate, and a step of individualizing the components by forming trenches in the active layer at least until the substrate emerges. The method comprises steps of depositing a layer of functional material on the active layer, depositing a photosensitive resin on the layer of material in such a way as to fill said trenches and to form a thin film on the upper face of the components, at least partially exposing the resin to radiation while underexposing the portion of resin in the trenches, developing the resin in such a way as to remove the properly exposed portion thereof, removing the functional material layer portion that shows through after the development step, and removing the remaining portion of resin.
Abstract:
The invention relates to a component comprising, on one face, a set of conductive inserts to be electrically connected to conductive buried regions of another component, said inserts resting on conductive blocks, advantageously produced from a deformable material and positioned at the surface of the component. The surface of the block, which is to come into contact with the insert, has at least one dimension larger than that of the buried region.
Abstract:
A method for producing a mechanism for connecting and/or soldering or sealing a component on a substrate, including depositing on the substrate a layer made of a ductile material which, if applicable, conducts electricity, and stamping the layer thus produced by means of an etched die, the etching depending on the shape that one wishes to give the mechanism for connecting and/or soldering.
Abstract:
Device for multiplexing a matrix of optical channels, application to wavelength division multiplexing and add-drop. This device comprises N plane optical wave guides (16), each being capable of multiplexing M channels to 1 channel, where M>1 and N>1, the set of N wave guides thus being capable of multiplexing M×N channels to N first channels, and a complementary plane optical wave guide (24) capable of multiplexing N second channels to at least one coupling channel, these N second channels being optically coupled to the N first channels respectively.
Abstract:
Method and machine to interconnect electric components by welding elements.The components (20,24) are provided with electric contact blocks and, given the fact that two components are to be interconnected, the blocks of one of these components are covered with welding elements made of a low melting point metallic material able to be welded to the blocks, the latter being wettable by the material in its molten state, whereas their environment is not so. The components are placed in contact so that these elements cover the corresponding blocks of the other component and the assembly obtained is heated to a temperature enabling the material to be melted.Application for microelectronics.
Abstract:
An electric connection of disconnection element is described as well as the corresponding connection or disconnection method and integrated circuits using such elements.The disconnection element consists of a disk or ingot joining two conductive tracks whose extremities are laid on wettable surfaces. Melting of the disk frees surface tension forces which separate its material into two balls centered on the wettable surfaces.The connection element is formed of two separate disks and, from the wettable surface pads, these disks are disposed opposite each other so that their material, once melted, unites to form a single droplet.A process is also disclosed for using these connection and disconnection elements for repairing defective integrated circuits.
Abstract:
A method for bonding two electronic components includes inserting hollow and open inserts into full convex elements of a lower hardness than that of the inserts, where, when an insert is inserted into a full element at least one surface of the open end of the insert is left free from the full element so as to create an outlet passage for gases contained in the insert.
Abstract:
This metal lip seal capable of ensuring tightness between two elements includes: two resilient members each intended to be accommodated in a cavity of one of the two elements, said cavities being located in line with a zone of engagement of the two elements one with the other in which tightness is desired; and a flexible body secured to the element receiving the resilient members, provided with two free ends, said free ends extending at least in line with said engagement zones and being in contact with the resilient members. Each of the resilient members is capable of exerting a contact force on the free ends in order to ensure tightness between the two elements.