摘要:
A method for filling vias, and in particular initially blind vias, in a wafer, and various apparatus for performing the method, comprising evacuating air from the vias; trapping at least a portion of the wafer and a paste for filling the vias between two surfaces; and pressurizing the paste to fill the vias.
摘要:
A carrier structure and method for fabricating a carrier structure with through-vias each having a conductive structure with an effective coefficient of thermal expansion which is less than or closely matched to that of the substrate, and having an effective elastic modulus value which is less than or closely matches that of the substrate. The conductive structure may include concentric via fill areas having differing materials disposed concentrically therein, a core of the substrate material surrounded by an annular ring of conductive material, a core of CTE-matched non-conductive material surrounded by an annular ring of conductive material, a conductive via having an inner void with low CTE, or a full fill of a conductive composite material such as a metal-ceramic paste which has been sintered or fused.
摘要:
A carrier structure and method for fabricating a carrier structure with through-vias each having a conductive structure with an effective coefficient of thermal expansion which is less than or closely matched to that of the substrate, and having an effective elastic modulus value which is less than or closely matches that of the substrate. The conductive structure may include concentric via fill areas having differing materials disposed concentrically therein, a core of the substrate material surrounded by an annular ring of conductive material, a core of CTE-matched non-conductive material surrounded by an annular ring of conductive material, a conductive via having an inner void with low CTE, or a full fill of a conductive composite material such as a metal-ceramic paste which has been sintered or fused.
摘要:
Conductive through vias are formed in electronic devices and electronic device carrier, such as, a silicon chip carrier. An annulus cavity is etched into the silicon carrier from the top side of the carrier and the cavity is filled with insulating material to form an isolation collar around a silicon core region. An insulating layer with at least one wiring level, having a portion in contact with the silicon core region, is formed on the top side of the carrier. Silicon is removed from the back side of the carrier sufficient to expose the distal portion of the isolation collar. The core region is etched out to expose the portion of the wiring level in contact with the silicon core region to form an empty via. The via is filled with conductive material in contact with the exposed portion of the wiring level to form a conductive through via to the wiring level. A solder bump formed, for example, from low melt C4 solder, is formed on the conductive via exposed on the carrier back side. The process acts to make the conductive via fill step independent of the via isolation step.
摘要:
An electronic dive and method of fabricating an electronic device. The method including placing a placement guide over a top surface of a module substrate, the placement guide having a guide opening, the guide opening extending from a top surface of the placement guide to a bottom surface of the placement guide; aligning the placement guide to an integrated circuit chip position on the module substrate; fixing the placement guide to the module substrate; placing an integrated circuit chip in the guide opening, sidewalls of the placement guide opening constraining electrically conductive bonding structures on bottom surface of the integrated circuit chip to self-align to an electrically conductive module substrate contact pad on the top surface of the module substrate in the integrated circuit chip position; and bonding the bonding structures to the module substrate contact pads, the bonding structures and the module substrate contact pads in direct physical and electrical contact after the bonding.
摘要:
A method for attaching a handler to a wafer, the wafer comprising an integrated circuit (IC), includes forming a layer of an adhesive on the wafer, the adhesive comprising a polyimide-based polymer configured to withstand processing at a temperature of over about 280° C.; and adhering a handler to the wafer using the layer of adhesive. A system for attaching a handler to a wafer, the wafer comprising IC, includes a layer of an adhesive located on the wafer, the adhesive comprising a polyimide-based polymer configured to withstand processing at a temperature of over about 280° C.; and a handler adhered to the wafer using the layer of adhesive.
摘要:
A structure and a method for forming the same. The structure includes an integrated circuit comprising N chip electric pads, wherein N is a positive integer, and wherein the N chip electric pads are electrically connected to a plurality of devices on the integrated circuit. The structure further includes N solder bumps corresponding to the N chip electric pads. A semiconductor interposing shield is sandwiched between the integrated circuit and the N solder bumps. The structure further includes N electric conductors (i) passing through the semiconductor interposing shield and (ii) electrically connecting the N solder bumps to the N chip electric pads.
摘要:
This disclosure teaches a method of filling deep vias or capping deep conducting paste filled vias in silicon or glass substrate using laser assisted chemical vapor deposition of metals. This method uses a continuous wave or pulsed laser to heat the via bottom and the growing metal fill selectively by selecting the laser wavelength such that silicon and/or glass do not absorb the energy of the laser in any appreciable manner to cause deposition in the field. Alternatively holographic mask or an array of micro lenses may be used to focus the laser beams to the vias to fill them with metal. The substrate is moved in a controlled manner in the z-direction away from the laser at about the rate of deposition thus causing the laser heating to be focused on the surface region of the growing metal fill.
摘要:
Apparatus and methods are provided for integrating microchannel cooling modules within high-density electronic modules (e.g., chip packages, system-on-a-package modules, etc.,) comprising multiple high-performance IC chips. Electronic modules are designed such that high-performance (high power) IC chips are disposed in close proximity to the integrated cooling module (or cooling plate) for effective heat extraction. Moreover, electronic modules which comprise large surface area silicon carriers with multiple chips face mounted thereon are designed such that integrated silicon cooling modules are rigidly bonded to the back surfaces of such chips to increase the structural integrity of the silicon carriers.