摘要:
Present embodiments relate to systems and methods for providing semiconductor device features using a protective layer during coating operations. One embodiment includes a method comprising providing a substrate with a hole formed partially therethrough, the hole comprising an opening in a first side of the substrate. Additionally, the method comprises disposing a protective layer over the first side of the substrate, removing a portion of the protective layer over at least a portion of the opening to provide access to the hole, and filling at least a portion of the hole with a fill material.
摘要:
A method of forming a multiconductor via includes forming at least one seed layer in at least one through-hole of a substrate, selectively patterning the seed layer to form a plurality of laterally separated regions, and depositing metal upon the regions. Alternatively, a through-hole may be substantially filled with dielectric material, a plurality of smaller through-holes may be formed in the dielectric material, and conductive material may be deposited in the smaller holes. Another method includes forming laterally separated protruding structures in a cavity of a substrate, depositing conductive material over the structures and dielectric material between the structures, and thinning the substrate. Alternatively, conductive nanotubes may be formed in the cavity, and dielectric material may be deposited that surrounds the nanotubes. A method of forming a multichip module includes forming at least one via extending through a plurality of stacked dice that includes a plurality of conductive elements.
摘要:
Methods and devices for placing a semiconductor wafer or other substrate in contact with solder are described. A wave soldering apparatus includes a solder bath, a nozzle for producing a solder wave, and a jig for orienting a substrate in a substantially vertical orientation and placing the substrate in contact with a cascading solder wave. In another wave soldering apparatus, a jig orients a semiconductor wafer in a substantially horizontal orientation in contact with the solder wave. Another soldering apparatus includes a tank comprising molten solder and a fixture configured to orient one or more semiconductor wafers in a substantially vertical orientation. Methods of placing semiconductor wafers or other substrates in contact with solder using the devices of the present invention are also disclosed.
摘要:
A reusable burn-in/test fixture for testing unsingulated dice on a semiconductor wafer consists of two halves. The first half of the test fixture is a wafer cavity plate for receiving the wafer, and the second half establishes electrical communication between the wafer and electrical testing equipment. A rigid substrate has conductors thereon which establish electrical contact with the wafer. The test fixture need not be opened until the burn-in and electrical testing are completed. After burn-in stress and electrical testing, it is possible to establish interconnection between the single die or separate and package dice into discrete parts, arrays or clusters, either as singulated parts or as arrays.
摘要:
Microelectronic imager assemblies comprising a workpiece including a substrate and a plurality of imaging dies on and/or in the substrate. The substrate includes a front side and a back side, and the imaging dies comprise imaging sensors at the front side of the substrate and external contacts operatively coupled to the image sensors. The microelectronic imager assembly further comprises optics supports superimposed relative to the imaging dies. The optics supports can be directly on the substrate or on a cover over the substrate. Individual optics supports can have (a) an opening aligned with one of the image sensors, and (b) a bearing element at a reference distance from the image sensor. The microelectronic imager assembly can further include optical devices mounted or otherwise carried by the optics supports.
摘要:
An apparatus for providing gross location, planarization, and mechanical restraint to one or more electronic components such as semiconductor dice to be subjected to stereolithographic processing. A double platen assembly including a first platen and a second platen mutually removably connected and configured and arranged to substantially secure an electronic component assembly in position therebetween. At least one of the platens is configured such that a portion of electronic components of a carrier substrate secured by the double platen assembly is viewable for exposure to an energy beam such as a laser beam used to cure a liquid into an associated dielectric stereolithographic packaging structure. Another embodiment includes the use of an adhesive-coated film for holding, locating and securing a plurality of individual electronic components for processing. A method of forming solder balls is also disclosed.
摘要:
A circuit for isolating a short-circuited integrated circuit (IC) formed on the surface of a semiconductor wafer from other ICs formed on the wafer that are interconnected with the short-circuited IC includes control circuitry within the short-circuited IC for sensing the short circuit. The control circuitry may sense the short circuit in a variety of ways, including sensing excessive current drawn by the short-circuited IC, and sensing an abnormally low or high voltage within the short-circuited IC. Switching circuitry also within the short-circuited IC selectively isolates the short-circuited IC from the other ICs on the wafer in response to the control circuitry sensing the short circuit. As a result, if the wafer is under probe test, for example, testing can continue uninterrupted on the other ICs while the short-circuited IC is isolated.
摘要:
A surface level control system for use with a fabrication tank of a programmable material consolidation apparatus includes at least one aperture with a lowermost edge located at about the same elevation as a desired surface level for unconsolidated material within the fabrication tank. The surface level control system may also include a receptacle for receiving unconsolidated material that has been removed from the fabrication tank. The surface level control system may be configured to constantly allow for the removal of unconsolidated material, or it may be configured to selectively remove unconsolidated material. One or more sensors may be used to monitor the surface level and provide information that may be used in maintaining the surface level at a substantially constant elevation. A recycling system may be used in conjunction with or separately from a surface level control system to reintroduce unconsolidated material back into the fabrication tank.
摘要:
A flexible column interconnect for a microelectronic substrate includes a plurality of conductive columns extending from a bond pad or other conductive terminal in substantially mutually parallel arrangement, providing redundant current paths between the bond pad and a common cap in the form of a contact pad to which they are all joined. The flexibility of the interconnect may be varied by controlling the column dimensions, height, aspect ratio, number of columns, column material and by applying a supporting layer of dielectric material to a controlled depth about the base of the columns. A large number of interconnects may be formed on a wafer, partial wafer, single die, interposer, circuit board, or other substrate.
摘要:
Stress and force management techniques for a semiconductor die to help compensate for stress within the semiconductor die and to help compensate for forces applied to the semiconductor die to minimize damage thereto.