Abstract:
A multi-layered printed wiring board is provided that is capable of securing required wiring density even with a decreased number of wiring layers and reducing radiation noises. The multi-layered printed wiring board has at least three wiring layers each at least having at least one power supply line or a ground line, and another kind of line, said wiring layers each having an outer edge. A ground line is formed at the outer edge of at least one of the wiring layers. A basic power supply line is formed inside the ground line. At least one power supply line extends from the basic power supply line. A plurality of electronic parts are mounted on at least one of the wiring layers. The at least one power supply line is wired to mounting positions of the electronic parts via at least one of the wiring layers.
Abstract:
A system for delivering power to a processor enables a DC-to-DC converter substrate to be secured to the processor carrier in the Z-axis direction. The ability to assemble the converter to the processor in this way facilitates assembly compared to systems in which the converter is plugged in to the processor carrier in the direction substantially parallel to the surface of the motherboard.
Abstract:
A printed circuit board can be used as a test card. The printed circuit board has a first image and a second image. The first image includes a first array pattern for attaching a package, a first power plane, and a first ground plane. The second image includes a second array pattern for attaching a package, a second power plane, and a second ground plane. A first routing area between the first image and the second image electrically and physically isolates the first power plane from the second power plane. The first routing area also physically isolates the first ground plane from the second ground plane. A first single trace extends through the first routing area. The first single trace electrically connects the first ground plane to the second ground plane.
Abstract:
The invention relates to a multilayer printed circuit board, in particular, for high-frequency operation, having least an outer, plane dielectric layer for accommodating interconnection paths of equal cross-section and component as well as further alternately provided metallic and dielectric layers for forming a reference earth and for the voltage supply to said interconnection paths and components via plated-through holes. In order to obtain a plane surface for the interconnection paths and predetermined areas on the printed circuit board, which areas have different characteristic impedances when interconnection paths having the same cross-section are used, at least the first metal layer comprises at least one window and the subsequent metal layer has a metal island corresponding to the area of the window, which island is connected to the reference earth via a buried plated-through hole, and the characteristic impedance of the interconnection paths is a function of the resulting thickness of the effective dielectric layers the number of which is increased in the area of the window.
Abstract:
The invention relates to an electrical interconnect device with power and ground lines interwoven about signal line layers and capacitive vias between signal layers so as to make efficient use of otherwise undedicated area between signal lines and signal layers and to reduce or eliminate the need for separate power and ground layers while providing decoupling capacitance within the wiring structure.
Abstract:
비아도체 그룹에 접속불량이 발생하더라도 전위의 공급경로를 확보하여 접속 신뢰성의 향상이 가능한 캐패시터 내장 배선기판을 제공한다. 본 발명의 캐패시터 내장 배선기판은 코어재(11)에 캐패시터(50)가 수용되고, 그 상하에 제 1 및 제 2 빌드업층(12,13)이 형성되고, 제 1 전위에 접속되는 제 1 비아도체 그룹과 제 2 전위에 접속되는 제 2 비아도체 그룹을 구비하고 있다. 캐패시터(50)의 표면 전극층(51)에는 제 1 비아도체 그룹에 접속되는 제 1 전극패턴과 제 2 비아도체 그룹에 접속되는 복수의 제 2 전극패턴이 형성되고, 제 1 빌드업층(12)의 근접 도체층(31)에는 제 1 비아도체 그룹에 접속되는 제 1 도체패턴과 제 2 비아도체 그룹에 접속되는 복수의 제 2 도체패턴이 형성된다. 제 2 전극패턴과 제 2 도체패턴은 모두 소정 수의 비아도체를 연결하는 패턴 형상을 가지는데, 연장방향이 서로 직교한다.
Abstract:
PURPOSE: A heat-radiating substrate is provided to reduce power loss using a metal plate as a ground layer and power layer. CONSTITUTION: A heat-radiating substrate comprises: a dielectric layer(20) formed on the surface of a metal plate(10); a circuit pattern(25) on the dielectric layer; a first via(30) which electrically connects the metal plate and circuit pattern by penetrating the metal plate; a through via(32) for connecting with the metal plate.
Abstract:
본 발명은 인쇄회로기판 및 그 제조방법에 관한 것으로, 다수의 영역으로 구분된 금속층, 상기 금속층의 적어도 일면에 형성된 빌드업층, 및 상기 빌드업층을 포함하여 상기 금속층을 관통하되, 상기 금속층의 상기 다수의 영역 각각을 전기적으로 분리시키는 관통부를 포함하는 것을 특징으로 하며, 금속층을 서로 다른 접지층 또는 파워층인 다수의 영역으로 구성하여 박판화를 구현하고, 금속층의 다수의 영역을 브릿지로 연결하고 이후에 관통하여 제조공정이 용이한 인쇄회로기판 및 그 제조방법을 제공한다.