Abstract:
PROBLEM TO BE SOLVED: To provide a layer constitution display unit capable of easily discriminating the constitutions of respective layers in a multilayer substrate. SOLUTION: The same number of paired copper foil constituted so that two copper foils correspond to one layer as the number of layers constituting the multilayer substrate are formed on the outer layer of the multilayer substrate 2 as layer constitution discrimination marks 3. The layer constitution discrimination marks 3 are displayed by three states "covered with resist", "covered with resist and silk" and "not covered with any of resist and silk", so that six kinds of constitutions at maximum can be displayed per layer and the constitutions of respective layers of the multilayer substrate 2 can be easily discriminated. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To increase the importance of a future microprocessor and a future computer system by decreasing power noise of intermediate frequency, by providing a semiconductor device structure for improving power noise property, and to provide a multilayer module having superior electrical characteristics accompanying reduction in the manufacturing cost, increase in wiring capability, and decrease in inductance. SOLUTION: A multilayer module comprises a top conductive layer L1 to which an electronic component is attached, a plurality of insulating layers 6, and a plurality of conductive layers L2-L8 arranged between the insulating layers. As for the conductive layers L1-L4 near the front surface of the module, two of at least three layers, a potential layer and/or a ground layer, are arranged alternately such that a signal layer is not sandwiched by the layers. Further, the multilayer module has a via, by which a corresponding signal layer, the potential layer, and the ground layer are electrically connected with each another and also with the top conductive layer L1. Further, the multilayer module has two layers of the potential layer and the ground layer, arranged alternately near the front surface, so that there is no signal layer therebetween, and a structure in which the via is not arranged in a local region for attaining the electrical effects of a solid surface. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
Techniques for reducing multi-reflection noise via compensation structures are described herein. An example system includes a capacitive component. The example system further includes a capacitive compensation structure coupled to two ends of the capacitive component. The example system includes a partially meshed ground plane coupled to one side of a dielectric substrate. The example system also includes one or more signal conductors coupled to another side of the dielectric substrate and electrically coupled to the capacitive component. The one or more signal conductors are located parallel to a meshed length of the partially meshed ground plane.
Abstract:
Embedding a discrete electrical device in a printed circuit board (PCB) includes: providing a vertical via as a blind hole from a horizontal surface of the PCB to an electrically conductive structure in a first layer, the first layer being one layer of a first core section of a plurality of core sections vertically arranged above each other, each core section including lower and upper conductive layers, and a non-conductive layer in between; inserting the electrical device into the via, with the device extending within at least two of the core sections; establishing a first electrical connection between a first electrical device contact device and the electrically conductive structure in the first layer; and establishing a second electrical connection between a second electrical device contact and a second layer, the second layer being one of the electrically conductive layers of a second horizontal core section.
Abstract:
A semiconductor package includes a metal baseplate, a semiconductor die having a reference terminal attached to the baseplate and an RF terminal facing away from the baseplate, and a multilayer circuit board having a first side attached to the baseplate and a second side facing away from the baseplate. The multilayer circuit board includes a plurality of interleaved signal and ground layers. One of the signal layers is at the second side of the multilayer circuit board and electrically connected to the RF terminal of the semiconductor die. One of the ground layers is at the first side of the multilayer circuit board and attached to the metal baseplate. Power distribution structures are formed in the signal layer at the second side of the multilayer circuit board. RF matching structures are formed in a different one of the signal layers than the power distribution structures.
Abstract:
A high frequency module includes a ground mounting electrode connected to a ground terminal of a component, a first ground in-plane conductor in a multilayer substrate on a portion under the component and connected to the ground mounting electrode with a first ground interlayer connecting conductor, a signal mounting electrode connected to a signal terminal of the component, and a signal in-plane conductor provided in the multilayer substrate on a portion under the first ground in-plane conductor and connected to the specific signal mounting electrode with a signal interlayer connecting conductor. The first ground in-plane conductor is between the component and the signal in-plane conductor, and the signal interlayer connecting conductor is on an outer side portion of the first ground in-plane conductor when seen from above.
Abstract:
Systems and methods described herein provide for a circuit board having multiple fault containment regions therein. The circuit board includes a first fault containment region defined, at least in part, by first and second metal layers coupled to ground. The first fault containment region includes a first signal layer between the first and second metal layers, a third metal layer between the first and second metal layers, the third metal layer connected to the first signal layer to provide a return path for the first signal layer, and a fourth metal layer between the first and second metal layers, the fourth metal layer connected to the first signal layer to provide power to the first signal layer. The circuit board also includes a second fault containment region in a plurality of layers below the first fault containment region.
Abstract:
A circuit board comprises a center segment distributing power and low-speed signaling, and outer segments for high-speed signaling. The segments use dielectric materials with different dielectric constants, with the outer segments supporting higher-speed signal transmission.