摘要:
A die attachment includes a placement head, a platen, and a vibration mechanism to vibrate at least a selected one of the placement head and platen while a die and a substrate mounted on the placement head and the platen, respectively, are in contact.
摘要:
A flip chip interconnect is made by mating the interconnect bump (104) directly onto a lead (114), rather than onto a capture pad. Also, a flip chip package includes a die (102) having solder bumps (104) attached to interconnect pads in an active surface, and a substrate (112) having electrically conductive traces (114) in a die attach surface (113), in which the bumps (104) are mated directly onto the traces (114). In some embodiments the interconnection is formed without employing a solder mask (86). In some methods a curable adhesive (122) is dispensed either onto the bumps (104) on the die (102) or onto the traces (114) on the substrate (112); the adhesive (122) is partly cured during the mating process, and the partly cured adhesive serves to confine the molten solder during a reflow process.
摘要:
The circuitry of a programmable logic device (for example, an FPGA) includes a configurable logic portion and a configuration memory. The configuration memory stores configuration data that configures the configurable logic portion to realize a user-defined circuit. The configurable logic portion is disposed on a first die whereas the configuration memory is disposed on a second die. The second die is bonded to the first die in stacked relation. Each bit of configuration data passes from the second die to the first die through a pair of micropads. One micropad of the pair is disposed on the first die and the other micropad of the pair is disposed on the second die. When the first die and second die are brought together in face-to-face relation, the two micropads form an electrical connection through which the configuration data bit passes from the second die to the first die.
摘要:
A method of manufacturing an electrical device that is electrically and mechanically connectable to another electrical device, the electrical device having a face equipped with contact pads, the method being characterised in that it includes:- a layer-application step in which an adhesive layer is applied on the face equipped with contact pads, the adhesive layer being composed of a substance with adhesive properties; - an opening-creation step in which an opening is created through the adhesive layer at the level of a contact pad; - an opening-filing step in which the opening is filled with a conductive material so that the opening is substantially filled with the conductive material so as to form a conductive path the volume of which is defined by the opening.
摘要:
A method for connecting a chip to a leadframe (16) includes forming bumps (14) on a die (12) by a Au stud-bumping technique, and attaching the chip to the leadframe (16) by thermo-compression of the bumps (14) onto bonding fingers (22) of the leadframe (16). Also a flip chip-in-leadframe package (10) is made according to the method. The package (10) provides improved electrical performance particularly for devices used in RF applications.
摘要:
A process for manufacturing a semiconductor device comprising the step of mounting a semiconductor component on a printed circuit board, with the electrode of the semiconductor component facing to that of the printed circuit board, the step of testing the function as a semiconductor device with the semiconductor component being mounted on the printed circuit board, the step of joining the electrodes of the printed circuit board and the semiconductor component together to obtain a semiconductor device when the testing result is good, and the step of replacing at least one of the printed circuit board and the semiconductor component with another component of the same type and again testing the function as a semiconductor device when the testing result is not good. By this method, even if the testing result is not good, at least one of the printed circuit board and the semiconductor component can be easily removed and replaced with another one, since the function as a semiconductor device is tested with the semiconductor component being mounted on the printed circuit board, thereby preventing the waste of components and increasing the working efficiency. Furthermore, the semiconductor component has, on one side, an electrode pad to be connected to the electrode of the printed circuit board and also, on the opposite side an electrode pad for testing so that even when the electrode pad formed on one side of the semiconductor component is in contact with the electrode of the printed circuit board and thus hidden, the function test can be conducted easily by using the electrode pad for testing formed on the other side of the semiconductor component.