Differential signal transmitting circuit board

Patent metadata

Field	Value
Publication number	US-2018177044-A1
Application number	US-201615387604-A
Country	US
Kind code	A1
Filing date	Dec 21, 2016
Priority date	Dec 21, 2016
Publication date	Jun 21, 2018
Grant date	—

Abstract

A differential signal transmitting circuit board includes a substrate, at least two differential conductive elements, and at least one insulating element. The differential conductive elements are disposed in the substrate. The insulating element is disposed in the substrate. The insulating element is close to or contacted to the differential conductive elements. A material of the substrate has a first equivalent dielectric constant. A material of the insulating element has a second equivalent dielectric constant. The first equivalent dielectric constant is different from the second equivalent dielectric constant.

First claim

1 . A differential signal transmitting circuit board, comprising:
a base layer; at least two electrically conductive components, being disposed in the base layer; and at least one insulating component, being disposed in the base layer, and the at least one insulating component being located close to or in contact with the at least two electrically conductive components; wherein, the base layer has a first equivalent dielectric constant, the at least one insulating component has a second equivalent dielectric constant, and the first equivalent dielectric constant is different from the second equivalent dielectric constant.

2 . The differential signal transmitting circuit board according to claim 1 , wherein the at least two electrically conductive components are configured for differential signal transmission.

3 . The differential signal transmitting circuit board according to claim 1 , wherein the base layer has a first surface and a second surface opposite to each other, and the at least two electrically conductive components penetrate through the base layer, and two ends of each of the at least two electrically conductive components are respectively located on the first surface and the second surface.

4 . The differential signal transmitting circuit board according to claim 1 , further comprising at least two electrically conductive lines, and the at least two electrically conductive lines respectively electrically connected to the at least two electrically conductive components.

5 . The differential signal transmitting circuit board according to claim 4 , wherein the at least two electrically conductive lines extend along a horizontal direction of the base layer, and the at least two electrically conductive components extend along a vertical direction of the base layer.

6 . The differential signal transmitting circuit board according to claim 1 , wherein the quantity of the at least one insulating component is one, and the insulating component is located between the at least two electrically conductive components.

7 . The differential signal transmitting circuit board according to claim 1 , wherein the quantity of the at least one insulating components is two, and the two insulating components are located between the at least two electrically conductive components.

8 . The differential signal transmitting circuit board according to claim 1 , wherein the quantity of the at least one insulating components is two, and the at least two electrically conductive components are located between the two insulating components.

9 . The differential signal transmitting circuit board according to claim 1 , wherein the at least one insulating component comprises two first insulating components and two second insulating components, the two first insulating components are located between the at least two electrically conductive components, and the at least two electrically conductive components are located between the two second insulating components.

10 . The differential signal transmitting circuit board according to claim 1 , wherein the at least one insulating component is located close to the at least two electrically conductive components, and a distance between an outer surface of the at least one insulating component and an outer surface of each of the at least two electrically conductive components is greater than zero and less than an outer diameter of each of the at least two electrically conductive components.

11 . The differential signal transmitting circuit board according to claim 1 , further comprising a first electrically conductive layer being disposed in the base layer, the at least two electrically conductive components and the first electrically conductive layer being electrically isolated from each other through the base layer.

12 . The differential signal transmitting circuit board according to claim 1 , further comprising a second electrically conductive layer being disposed in the base layer, the at least two electrically conductive components and the second electrically conductive layer being electrically isolated from each other through the base layer.

13 . The differential signal transmitting circuit board according to claim 1 , wherein the base layer has at least one hole, the at least one hole extends from a surface of the base layer to the at least one insulating component.

14 . The differential signal transmitting circuit board according to claim 1 , wherein the second equivalent dielectric constant ranges in 1 to 50.

15 . The differential signal transmitting circuit board according to claim 1 , wherein the base layer is a composite layer.

16 . The differential signal transmitting circuit board according to claim 1 , wherein each of the at least two electrically conductive components is hollow.

17 . The differential signal transmitting circuit board according to claim 1 , wherein each of the at least two electrically conductive components comprises a hollow electrically conductive object and a filling material, the filling material is filled inside the hollow electrically conductive object, and the filling material is made of gel, isolation material or electrically conductive material.

18 . The differential signal transmitting circuit board according to claim 1 , wherein the quantity of the at least one insulating components is two, and the two insulating components are respectively located at inner sides of the at least two electrically conductive components.

19 . The differential signal transmitting circuit board according to claim 1 , wherein the quantity of the at least one insulating components is two, and the two insulating components are respectively located at outer sides of the at least two electrically conductive components.

Assignees

• Ind Tech Res Inst

Inventors

• Hsu Chien-Min
• Wu Shih-Hsien

Classifications

• H01P1/227

  Strip line attenuators (H01P1/23 takes precedence) · CPC title

• H03H7/38

  Impedance-matching networks · CPC title

• H05K1/0251

  related to vias or transitions between vias and transmission lines · CPC title

• H05K1/0245 Primary

  Lay-out of balanced signal pairs, e.g. differential lines or twisted lines · CPC title

• H01P3/026

  Coplanar striplines [CPS] · CPC title