Abstract:
Selective transfer of dies including semiconductor devices to a target substrate can be performed employing local laser irradiation. Coining of at least one set of solder material portions can be employed to provide a planar surface-to-surface contact and to facilitate bonding of adjoining pairs of bond structures. Laser irradiation on the solder material portions can be employed to sequentially bond selected pairs of mated bonding structures, while preventing bonding of devices not to be transferred to the target substrate. Additional laser irradiation can be employed to selectively detach bonded devices, while not detaching devices that are not bonded to the target substrate. The transferred devices can be pressed against the target substrate during a second reflow process so that the top surfaces of the transferred devices can be coplanar. Wetting layers of different sizes can be employed to provide a trapezoidal vertical cross-sectional profile for reflowed solder material portions.
Abstract:
The invention relates to a chip assembly (18) having a connection substrate (12) and a plurality of semiconductor substrates (1) arranged on the connection substrate, in particular chips, wherein connection surfaces (5) arranged on a contact surface of the chips (1) are connected to connection surfaces on a contact surface (14) of the connection substrate (12), wherein a side edge of the chips (1) extends parallel to the contact surface of the connection substrate (12), and the contact surface of the chips (1) extends transversely to the contact surface of the connection substrate (12), through-connections (13) arranged in the connection substrate connect outside contacts (15) arranged on an outside contact side to the contact surfaces designed as inside contacts (14) on the contact surface of the connection substrate, and connection surfaces of the chips (1) adjacent to the side edge are connected to the inside contacts of the connection substrate via a remelted solder material depot (16). The invention further relates to a method for manufacturing a chip assembly (18).
Abstract:
The present invention is related to a method for aligning and bonding a first element (1) and a second element (2), the first element being a semiconductor die or substrate, the method comprising: obtaining a first element (1) having at least one protrusion, the protrusion having a base portion (12) made of a first non-deformable material and an upper portion (13) made of a second, deformable material, different from the first material; obtaining a second element (2) having a first main surface and second main surface (8) and at least one through-hole between the first and second main surface; placing the first and second element onto each other; receiving in the through-hole of the second element (2) the protrusion of the first element (1), the protrusion being arranged and constructed so as to extend from an opening of the through-hole in the first main surface to a position beyond an opening of the through-hole in the second main surface (8); deforming the deformable portion (13) of the protrusion, such that the deformed portion mechanically fixes the second element (2) on the first element (1).
Abstract:
A metod of surface mounting an electrical component (2) on a substate (10), in which a contact area (8) of the component (2) is electrically connected to a conductive area (14) on the substrate, the metod comprising the steps of: positioning the component against the substrate in the position for mounting; and directing a laser beam through the substrate towards the contact area of the component such that the conductive area on the substrate facing the contact area absorbs energy fron the laser beam and is thereby bonded to the contact conductive area, the substrate being arranged to be transmissive to the light and wherein the substrate is a plastics or polyester material.
Abstract:
A component mounting apparatus includes a component feeder (20) that feeds a component (2) with its bump electrodes facing down, a mounting head (5) that mounts the component onto a substrate (3), a supporting base (8) that secures the substrate, and a positioning device (6, 7) that aligns the component with the substrate. The mounting head includes an ultrasonic vibration generator (24), an ultrasonic vibration propagation member (34, 38, 54) that conveys the ultrasonic vibration provided by the ultrasonic vibration generator to a working face (33, 41, 57) holding the component as vibration parallel thereto, a pressure loader (22, 23, 39, 55, 59) that applies a pressure load to the working face from a position immediately thereabove in the direction perpendicular thereto, and a heater (32, 47, 49, 50, 51, 52, 53) that heats the vicinity of the working face. Thereby, ultrasonic bonding is carried out with high reliability even if the component has a number of bump electrodes (2a) on its face.
Abstract:
Die Erfindung betrifft ein Verfahren zur Herstellung eines Chipmoduls (90) mit einem Trägersubstrat und zumindest einem auf dem Trägersubstrat angeordneten Chip sowie einer Kontaktleiteranordnung (45) zur Verbindung von Chipanschlussflächen mit auf einer Kontaktseite (56) des Chipmoduls angeordneten Anschlusskontakten (69, 70, 71), bei dem der Chip mit seiner mit den Chipanschlussflächen versehenen Frontseite auf dem Trägersubstrat fixiert wird und nachfolgend die Ausbildung der Kontaktleiteranordnung durch eine Strukturierung einer Kontaktmateriallage des Trägersubstrats erfolgt.
Abstract:
The invention relates to a chip assembly (18) having a connection substrate (12) and a plurality of semiconductor substrates arranged on the connection substrate, in particular chips 1, wherein connection surfaces (5) arranged on a contact surface of the chips are connected to connection surfaces on a contact surface of the connection substrate, wherein the chips extend having a side edge parallel to and the contact surface thereof transverse to the contact surface of the connection substrate, wherein through-connections (13) are arranged in the connection substrate which connect outside contacts (15) arranged on an outside contact side to the contact surfaces designed as inside contacts (14) on the contact surface of the connection substrate, wherein connection surfaces of the chips arranged adjacent to the side edge are connected to the inside contacts of the connection substrate via a remelted solder material depot (16). The invention further relates to a method for producing a chip assembly (18).
Abstract:
Die Erfindung betrifft eine Transponderlage (10), insbesondere zur Herstellung einer Chipkarte, mit einem Antennensubstrat (12), das auf einer Antennenseite (11) mit einer aus einem Drahtleiter (13) gebildeten Antenne (14) versehen ist, und eine durch eine Ausnehmung im Antennensubstrat gebildete Chipaufnahme aufweist, in der ein Chip (21) aufgenommen ist, wobei Drahtleiterenden, die zur Ausbildung von Anschlussenden (15) der Antenne dienen, an einem gegenüber der Rückseite (26) des Antennensubstrats (12) zurückversetzten Boden (20) der Chipaufnahme ausgebildet sind, und der Chip derart in der Chipaufnahme aufgenommen ist, dass auf einer Kontaktseite (36) des Chips angeordnete Anschlusskontakte (22) mit Kontaktabflachungen (19) der Anschlussenden (15) kontaktiert sind, und der Chip mit seiner den Anschlusskontakten gegenüberliegenden Rückseite (27) seines Halbleiterkörpers (28) im Wesentlichen bündig mit der Rückseite des Antennensubstrats angeordnet ist. Des Weiteren betrifft die Erfindung ein Verfahren zur Herstellung einer Transponderlage.