摘要:
A multilayer ceramic repair process which provides a new electrical repair path to connect top surface vias. The repair path is established between a defective net and a redundant repair net contained within the multilayer ceramic substrate. The defective net and the repair net each terminate at surface vias of the substrate. A laser is used to form post fired circuitry on and in the substrate. This is followed by the electrical isolation of the defective net from the electrical repair structure and passivation of the electrical repair line.
摘要:
A multilayer ceramic repair process which provides a new electrical repair path to connect top surface vias. The repair path is established between a defective net and a redundant repair net contained within the multilayer ceramic substrate. The defective net and the repair net each terminate at surface vias of the substrate. A laser is used to form post fired circuitry on and in the substrate. This is followed by the electrical isolation of the defective net from the electrical repair structure and passivation of the electrical repair line.
摘要:
A method and structure to form surface plating metallization on a substrate. Two layers of tape are applied to the surface of the substrate. A first path is cut through both layers of tape exposing the substrate surface. The first path connects at least one conductive via on the top surface of the substrate. A second path is cut through the second layer of tape exposing the first layer of tape. The second path is routed from the first path to an edge of the substrate A seed layer is deposited over the surface of the second layer of tape thereby creating a seeded plating path in the first path and a sacrificial seeded conduction path in the second path. Connecting the sacrificial seeded conduction path to a plating potential at the edge of the substrate creates a plated path on the surface of the substrate. The sacrificial path is removed when the tape is removed.
摘要:
An apparatus and method is provided for vacuum screen printing a greensheet having vias and both vias and open areas whereby vacuum leakage in the apparatus is minimized and avoids bowing of the screen over the open area of the greensheet. An interposer apparatus is provided comprising at least two layers having vertical through openings in registration with the via openings of the greensheet and screen. The interposer also comprises vertical through openings communicating with the open area of the greensheet and with vent channels of the interposer. A porous membrane is also used either alone or in conjunction with the interposer to provide enhanced screening results.
摘要:
A cleaning method and related apparatus for cleaning semiconductor screening masks using an aqueous alkali detergent solution applied under high pressure simultaneously from both sides of the mask, followed by a drying step that uses air knives to blow off the mask surface any residual cleaner solution.
摘要:
A cleaning method and related apparatus for cleaning semiconductor screening masks using an aqueous alkali detergent solution applied under high pressure simultaneously from both sides of the mask, followed by a drying step that uses air knives to blow off the mask surface any residual cleaner solution.
摘要:
Disclosed is an electronic packaging substrate which includes a sintered ceramic body having at least one internal layer of wiring and at least one cooling channel internal to and integral with the sintered ceramic body for cooling a heat-generating electronic device placed on the sintered body. Also disclosed is a method of making the electronic packaging substrate.
摘要:
A method for testing the integrity at least two test objects, each object is made of a plastically deformable material, by a. contacting a moving means with the objects at a first point in time, the moving means at a first position and the objects at a first position, the moving means having a shaped portion; b. shifting at least a portion of the objects to a second position at a second time, subsequent to the first time, wherein at least a portion of the objects were displaced during the interval between the first time and the second time; c. evaluating the objects after the shifting in step b. 22.
摘要:
An aqueous alkaline cleaning composition for efficient removal of Mo, Cu, W, or Cu/Ni-based conductive paste residue from screening masks, associated screening equipment and the like by using alkali metal salt and/or tetramethyl ammonium salt of polyacrylic acid, acrylic acid-methacrylic acid co-polymer, polyaspartic acid, polylactic acid, poly(acrylic acid-co-maleic anhydride), poly(maleic acid), with excess alkali for pH adjustment in the range of about 11.5-13.5, and a surfactant which may be a medium foam, low foam or no-foam surfactant, and is preferably an amphoteric and/or non-ionic and/or ionic surfactant.
摘要:
A fixture for holding a workpiece in a machining apparatus comprises at least one opening having at least one flexible side for elastically holding the workpiece and a slot adjacent each of the at least one side for allowing the side to flex.