摘要:
The passive component (1) has a first part (22) of a material with a first resistance value, which value can be lowered to a second value by laser trimming. The second value is at most one tenth of the first value and preferably less. Said material crystallizes in a laser trimming process, which locally heats the material to at least a transition temperature. Said material contains at least two different elements, which are preferably aluminum and germanium. The passive component (1) may be, for example, a resistor or a capacitor and may be part of a thin-film network of resistors, capacitors and/or inductors. In a resistor, it is preferred to have a second part (4) which contains a different resistance material with a resistance value lower than the first value and preferably higher than the second value.
摘要:
A method for modifying the value of a electric resistor (30), comprising a ferromagnetic material (31) having a first direction of magnetisation, comprising the following steps: a) illuminating a first area (32) of the ferromagnetic material (31) with a first LASER beam (14), such that this area is heated to a temperature greater than or equal to the Curie temperature of the ferromagnetic material (31); b) applying, to the first area (32), a magnetic field of which the direction is the opposite to the first direction of magnetisation of the ferromagnetic material (31) ; c) reducing the energy provided by the first LASER beam (14) at the first area (32) in order to allow the first area to cool to form a first controlled magnetic domain (36C).
摘要:
A method is provided for tuning (i.e. modifying, changing) the impedance of semiconductor components or devices using a focused heating source. The method may be exploited for finely tuning the impedance of semiconductor components or devices, by modifying the dopant profile of a region of low dopant concentration (i.e. increasing the dopant concentration) by diffusion of dopants from adjacent regions of higher dopant concentration through the melting action of a focused heating source, for example a laser. The present invention is in particular directed to the use of lasers in relation to circuits for the creation of conductive links and pathways where none existed before. The present invention more particularly relates to a means wherein impedance modification (i.e. trimming or tuning) may advantageously be carried out as a function of the location of one or more conductive bridge(s) along the length of a gap region.
摘要:
L'invention concerne un procédé de modification du dopage d'une région ou couche de silicium dopé, comprenant les étapes consistant à revêtir la région ou couche de silicium (11) d'une couche de siliciure d'un métal réfractaire (14) ; et à chauffer la région d'interface entre le silicium et le siliciure à une température choisie. Application à la fabrication d'une résistance ajustable ou d'un transistor MOS à tension de seuil ajustable.
摘要:
L'invention concerne un procédé de modification du dopage d'une région ou couche de silicium dopé, comprenant les étapes consistant à revêtir la région ou couche de silicium (11) d'une couche de siliciure d'un métal réfractaire (14) ; et à chauffer la région d'interface entre le silicium et le siliciure à une température choisie. Application à la fabrication d'une résistance ajustable ou d'un transistor MOS à tension de seuil ajustable.