| 摘要 |
<p>There are provided a printed circuit board (PCB) capable of increasing the width of a signal transmission line without impedance mismatching and a PCB capable of exposing a part of a contactor. The PCB capable of increasing the width of a signal transmission line without impedance mismatching includes a first ground layer, a first dielectric layer, and the signal transmission line, which are laminated sequentially and extended in the same direction, and a plurality of first ground patterns. The plurality of first ground patterns are formed by etching a surface of the first ground layer in an axial direction thereof at a predetermined interval in a line. The plurality of first ground patterns expose the first dielectric layer. Also, the PCB capable of exposing a part of a contactor includes a signal transmission line, the contactor, and a cover layer. The contactor is formed in a single body with the signal transmission line at an end thereof and has a width greater than that of the signal transmission line. The cover layer covers the whole surface where the signal transmission line is formed. The cover layer includes a hole exposing the contactor, excluding a part the contactor, which is close to the signal transmission line.</p> |
