Abstract:
Embedding a power modification component such as a capacitance inside of an adaptor board located to extend over and beyond the vias of the main circuit board so that a portion of the interposer board containing the embedded capacitance is located beyond where the vias or blinds are located. This permits that via to conduct through the opening. In this way, the capacitance and the resistance will have a closer contact point to the electrical component. A resistance can also be embedded in an opening in the adaptor board and be vertically aligned within the opening to make contact with a pad on top of the adaptor board and a pad at the bottom of the adaptor board so that electricity conducts through the embedded component.
Abstract:
A method and a structure with multiple implementations is provided that depends on the specific need, for placing (embedding) a serial loopback circuit of known design in a printed circuit board directly beneath the device under test. Micro-vias and traces connect components including transmitter components (TX) and receiver components (RX) that are formed into a loopback circuit for connection to a device under test (DUT). The connection is accomplished by a coupling capacitor with a shortest possible electrical length approximating a straight line between said components and said DUT and said distance is a length of said short straight line times a square root of 2 so that said receiver components are beneath the DUT.
Abstract:
A method and a structure with multiple implementations is provided that depends on the specific need, for placing (embedding) a serial loopback circuit of known design in a printed circuit board directly beneath the device under test. Micro-vias and traces connect components including transmitter components (TX) and receiver components (RX) that are formed into a loopback circuit for connection to a device under test (DUT). The connection is accomplished by a coupling capacitor with a shortest possible electrical length approximating a straight line between said components and said DUT and said distance is a length of said short straight line times a square root of 2 so that said receiver components are beneath the DUT.
Abstract:
A method and an apparatus for forming a contact pad on a printed circuit board over a filled plate via or blind in which an additional metallic or a non metallic coating is applied to a final surface finished plate which encapsulates the side walls of the wear resistant surface plate, and also covers the side walls of the metal layer plated onto the filled via and the wrap around plated metal which was plated in the via and onto the surface of the base metal to the extents of the pad geometry. This prevents subsequent undermining through the etching process and ensuring the integrity and reliability of the vias' electrical connection when an underlying base metal such as but not limited to copper and the surface plated metal are formed when plating metal in the via and consequently onto the surface.
Abstract:
Embedding a power modification component such as a capacitance inside of an adaptor board located to extend over and beyond the vias of the main circuit board so that a portion of the interposer board containing the embedded capacitance is located beyond where the vias or blinds are located. This permits that via to conduct through the opening. In this way, the capacitance and the resistance will have a closer contact point to the electrical component. A resistance can also be embedded in an opening in the adaptor board and be vertically aligned within the opening to make contact with a pad on top of the adaptor board and a pad at the bottom of the adaptor board so that electricity conducts through the embedded component.
Abstract:
The present invention describes essentially three different embodiments for the implementation of low impedance (over frequency) power delivery to a die. Such low impedance to a high frequency allows the die to operate at package-level speed, thus reducing yield loss at the packaging level. Each embodiment addresses a slightly different aspect of the overall wafer probe application, lit each embodiment, however, the critical improvement of this disclosure is the location of the passive components used, for supply filtering/ decoupling relative to prior art. All three embodiments, require a method to embed the passive components in close proximity to the pitch translation substrate or physically in the pitch translation substrate.
Abstract:
Due to size and cost it becomes advantageous for integrated circuit (IC) manufacturers to use "single-ended" (one signal path per unique information path) high speed signals electrical contact pins (pins transmitting digital information that connect the integrated circuit to a printed circuit hoard) with a minimum number of surrounding powers and grounds. This lower cost method, however, creates electrical interference and coupling issues known as crosstalk between two adjacent signal paths in the via structure required to electrically connect the integrated circuit to the signal paths in the printed circuit hoard. Such crosstalk, in turn, increases jitter, degrades timing, and ultimately reduces the maximum operating speed, of the circuit (performance). This disclosure presents a structure using micro-plating, micro-drilling and micro-machining methods that isolates adjacent signals by placing a metal barrier that shunts coupling currents to ground. The micro-drilling methods also reduce the length of adjacent signal paths in a specific signal routing and controlled depth drilling sequence.
Abstract:
A shuttle board relay is provided that Is scalable to a specific pitch or routing density, the shuttle board relay provides a path with different sets of electrics! components that allows this via by allowing the integration of components and other types of customization. The shuttle board relay provides a minimally disruptive path to the signal. This minimizes loss and signal distortion, isolation and crosstalk am a function of pitch. Since pitch can be set, grounds included, etc, a design may be fully optimized for low cross talk.
Abstract:
A method and a structure for a coaxial via that extend along the entire length of a signal via in a printed circuit board. Signal integrity is improved by providing ground shield for the entire length of the coaxial via. The ground shielding can be implemented by either providing ground cage vias around a signal via and routing a trace to the signal via on a built up layer or by providing a semi circle ground trench through a build up layer to permit a trace access to the signal via.