Abstract:
The present invention is related to a method for bonding a first semiconductor substrate to a second semiconductor substrate by direct bonding, wherein the substrates are both provided on their contact surfaces with a dielectric layer, followed by a CMP step for reducing the roughness of the dielectric layer. Preferably, the dielectric layer after CMP has an roughness of less than 0.2nm RMS. Then a layer of SiCN is deposited onto the dielectric layer, followed by a CMP step which reduces the roughness of the SiCN layer to the order of 1 tenth of a nanometre. Preferably the RMS value after CMP is less than 0.1nm. Then the substrates are subjected to a pre-bond annealing step. The substrates are then bonded by direct bonding, possibly preceded by one or more pre-treatments of the contact surfaces, and followed by a post-bond annealing step, at a temperature of less than or equal to 250°C, preferably between 200°C and 250°C. It has been found that the bond strength is excellent, even at the above named annealing temperatures, which are lower than presently known in the art.
Abstract:
According to the invention, a substrate, provided with an electrically conductive wire (3) coated with an electrically insulating material, is impregnated with a polymerisable material (4). A reception area (5) for a chip (2) is formed on a surface of the substrate (1) by means of deformation. The reception area (5) is stiffened using the polymerisable material (4). The chip (2) is disposed in the reception area (5) and an electrical connection area (8) of the chip (2) is connected electrically to the electrically conductive wire of the substrate (1).
Abstract:
A transfer substrate with a compliant resin is used to bond one or more chips to a target wafer. An implant region is formed in a transfer substrate. A portion of the transfer substrate is etched to form a riser. Compliant material is applied to the transfer substrate. A chip is secured to the compliant material, wherein the chip is secured to the compliant material above the riser. The chip is bonded to a target wafer while the chip is secured to the compliant material. The transfer substrate and compliant material are removed from the chip. The transfer substrate is opaque to UV light.
Abstract:
Procédé de réalisation d'au moins un détecteur infrarouge photosensible par assemblage d'un premier composant (100, 230) électronique comportant une pluralité de photodiodes (110) sensibles au rayonnement infrarouge et d'un deuxième composant (400) électronique comprenant au moins un circuit électronique de lecture de la pluralité de photodiodes, le procédé étant caractérisé en ce qu'il comprend : l'obtention sur chacun des premier (100, 230) et deuxième (400) composants d'une face de liaison (192, 492) formée au moins partiellement par une couche (210, 405) à base d'oxyde de silicium (Si02); une étape de collage du premier composant (100, 230) et du deuxième composant (400) par leurs faces de liaison (192, 492), réalisant ainsi le collage direct des deux composants (100, 230, 400). Ce procédé permet de simplifier l'hybridation de composants hétérogènes pour réaliser un détecteur infrarouge. L'invention porte également sur un détecteur infrarouge et sur un ensemble pour la réalisation d'un tel détecteur.
Abstract:
Methods of forming bonded semiconductor structures include providing a substrate structure including a relatively thin layer (102) of material on a thicker substrate body (104), and forming a plurality of through wafer interconnects (112) through the thin layer of material. A first semiconductor structure (132A-132F)may be bonded over the thin layer of material, and at least one conductive feature (134) of the first semiconductor structure may be electrically coupled with at least one of the through wafer interconnects. A transferred layer of material (212) may be provided over the first semiconductor structure on a side thereof opposite the first substrate structure, and at least one of an electrical interconnect (302), an optical interconnect (402), and a fluidic interconnect (504) may be formed in the transferred layer of material. A second semiconductor structure (322,422) may be provided over the transferred layer of material on a side thereof opposite the first semiconductor structure. Bonded semiconductor structures are fabricated using such methods.
Abstract:
A transfer substrate with a compliant resin is used to bond one or more chips to a target wafer. An implant region is formed in a transfer substrate. A portion of the transfer substrate is etched to form a riser. Compliant material is applied to the transfer substrate. A chip is secured to the compliant material, wherein the chip is secured to the compliant material above the riser. The chip is bonded to a target wafer while the chip is secured to the compliant material. The transfer substrate and compliant material are removed from the chip. The transfer substrate is opaque to UV light.