有效連接PCB金手指之雙向測點排列方法

Bidirectional Arrangement of Linkage Extension in High Density Printed Circuit Board

金手指不只用於延伸也運用於檢查電路的正確性。雖然印刷電路板（Printed circuit board, PCB）製造的趨勢是增加更多的元件或電路，導線之間的距離與金手指的寬度變小，使得檢測時很難透過飛針進行檢測電路的正確性。有許多解決金手指擴充的方式被提出，然而卻很少討論面積的利用率。在本文中，我們提出一個雙向量測點的排列方式和盡可能減少相對應連線金手指這樣多出來的擴充區域，使得PCB產品在製造時能夠更精確，且將PCB製造的成本最小化。

Golden fingers are not only used for extension but also to check the correctness of the circuit. While the trend of PCB manufacturing is to contain more and more components or circuits such that the distance between or the width of golden fingers get smaller. It is difficult to check the correctness of circuit by flying probe. Many solutions for the extensi on of golden fingers are proposed, however, the utilization of area used for extension is seldom discussed. In this paper,we propose a bi - directional pad arrangement and the corresponding linkage for golden fingers such that the extra area for linkage extension would be minimized as possible, i.e., minimize the cost of PCB manufacturing for the more accurate PCB product.