公开(公告)号：US09392683B2

公开(公告)日：2016-07-12

申请号：US14554923

申请日：2014-11-26

Applicant: Elite Material Co., Ltd.

Inventor： Ming-Chuan Chang ,  Li-Chih Yu ,  Yu-Te Lin

IPC: H05K1/02 ,  H01P3/08 ,  H05K1/03

CPC classification number: H05K1/024 ,  H01P3/082 ,  H05K1/0242 ,  H05K1/0245 ,  H05K1/025 ,  H05K1/0298 ,  H05K1/0353 ,  H05K1/0366 ,  H05K2201/029

Abstract: A multi-layer printed circuit board comprises: at least two insulation layers, respectively having glass fiber cloth and cured resin covering thereon, the insulation layers being stacked on each other; an internal trace layer formed between two neighboring insulation layers; and an external trace layer formed on an outer surface of the outermost insulation layer; wherein the insulation layers have a dielectric constant of 3.4 or less, and the internal and external trace layers have a trace width between 40 and 75 micrometers, such that the multi-layer printed circuit board has a characteristic impedance between 45 and 55Ω in single-ended signaling and between 90 and 110Ω in differential signaling.

Abstract translation: 多层印刷电路板包括：分别具有玻璃纤维布和覆盖在其上的固化树脂的至少两个绝缘层，所述绝缘层彼此堆叠; 在两个相邻绝缘层之间形成的内部迹线层; 以及形成在最外绝缘层的外表面上的外部迹线层; 其中所述绝缘层具有3.4或更小的介电常数，并且所述内部和外部迹线层具有介于40和75微米之间的迹线宽度，使得所述多层印刷电路板具有在45和55之间的特征阻抗; 在单端信令和90和110之间和OHgr; 差分信号。