Transmission line cable including an unbendable superimposed layer part and a bendable non-superimposed layer part

Patent metadata

Field	Value
Publication number	US-11374299-B2
Application number	US-202016990948-A
Country	US
Kind code	B2
Filing date	Aug 11, 2020
Priority date	Jun 29, 2019
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

The invention provides a transmission cable with a main baseline layer and a superimposed line layer. The main baseline layer includes a superimposed part, and a non-superimposed part. The superimposed line layer and the superimposed part form an unbendable part; the non-superimposed part forms a bendable par. The main baseline layer includes a first grounding layer, a first base layer stacked, a signal line layer, and a second base layer. The superimposed line layer includes a third base layer and a second grounding layer. The bendable part is small in thickness, so that the transmission cable provided by the invention has good bending performance, thereby improving the practicability of the transmission cable and prolonging the service life of the transmission cable.

First claim

What is claimed is:

1. A transmission cable, comprising:
a superimposed line layer;
a main baseline layer attached with the superimposed line layer, comprising a superimposed part on which the superimposed line layer is stacked, and a non-superimposed part on which no superimposed line layer is stacked;
an unbendable part of the transmission cable formed by the superimposed line layer and the superimposed part;
a bendable part of the transmission cable formed by the non-superimposed part; wherein
the main baseline layer comprises a first grounding layer, a first base layer stacked at one side of the first grounding layer, a signal line layer stacked at one side of the first base layer opposite from the first grounding layer, and a second base layer stacked at one side of the signal line layer opposite from the first base layer;
the superimposed line layer comprises a third base layer stacked at one side of the second base layer opposite from the signal line layer, and a second grounding layer stacked at one side of the third base layer opposite from the second base layer;
the signal line layer comprises an overlapping part on which the second base layer is stacked, and an extension part on which the second base layer is not stacked.

2. The transmission cable as described in claim 1 , wherein the main baseline layer further comprises a first protective layer arranged at one side of the first grounding layer opposite from the first base layer; and the superimposed line layer further comprises a second protective layer stacked at one side of the second grounding layer opposite from the third base layer.

3. The transmission cable as described in claim 2 , wherein a length of the second protective layer is equal to a length of the second grounding layer, and is smaller than a length of the third base layer; and a length of the first protective layer is smaller than a length of the first grounding layer.

4. The transmission cable as described in claim 1 , wherein a sum of the thickness of the second base layer and the thickness of the third base layer is equal to a thickness of the first base layer.

5. The transmission cable as described in claim 1 , wherein the signal line layer comprises a plurality of grounding plates spaced from each other and a plurality of corresponding signal cables between every two adjacent grounding plates.

6. The transmission cable as described in claim 5 , further comprising a plurality of spaced second grounding through holes arranged in the superimposed part, wherein the plurality of spaced second grounding through holes sequentially pass through the first base layer, the signal line layer, the second base layer and the third base layer, and are electrically connected with the first grounding layer, the second grounding layer and the grounding plates of the signal line layer.

7. The transmission cable as described in claim 5 , further comprising a spaced plurality of first grounding through holes arranged in the non-superimposed part, wherein the plurality of first grounding through holes pass through the first base layer and two ends thereof are electrically connected with the grounding plates of the signal line layer and the first grounding layer respectively.

Assignees

• Aac Technologies Pte Ltd

Inventors

• Liang Yue
• Chen Yongli
• Wang Jianan

Classifications

• H01P3/18

  built-up from several layers to increase operating surface, i.e. alternately conductive and dielectric layers · CPC title

• H01P3/026 Primary

  Coplanar striplines [CPS] · CPC title

• H01P3/082 Primary

  Multilayer dielectric · CPC title

• H05K1/0278

  Rigid circuit boards or rigid supports of circuit boards locally made bendable, e.g. by removal or replacement of material · CPC title