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US 2009/0260860 A1Published application
Flexible printed circuit board
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsYU-CHANG PAI, SHOU-KUO HSU, CHIEN-HUNG LIU
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Abstract
An exemplary FPCB includes two or more dielectric layers. Each dielectric layer is located between a signal layer and a ground layer. A differential pair including two transmission lines is arranged in each signal layer. Each ground layer includes one or more voids defined therein. Each void is opposite and adjacent to a differential pair.
Claims18
A flexible printed circuit board comprising:
- two or more dielectric layers;
- each dielectric layer is located between a signal layer and a ground layer;
- a differential pair comprising of two transmission lines arranged in each signal layer;
- wherein each ground layer has one or more voids defined therein, each void is opposite and adjacent to a differential pair.
1 more element
A method for making a flexible printed circuit board, comprising:
- providing two or more dielectric layers;
- locating each dielectric layer between a signal layer and a ground layer;
- arranging a differential pair comprising of two transmission lines in each signal layer;
- and
- removing material from a conductive material in each ground layer, the removal occurs opposite and adjacent to a differential pair.
2 more elements
Dependencies are inferred from the claim text.