Multilayer transmission line plate

Patent metadata

Field	Value
Publication number	US-10506705-B2
Application number	US-201515542722-A
Country	US
Kind code	B2
Filing date	Nov 20, 2015
Priority date	Jan 14, 2015
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

Provided is a multilayered transmission line plate including a pair of ground layers, a differential wiring disposed between a one-sided ground layer of the pair of ground layers and the other ground layer, an insulating layer (X) disposed between the differential wiring and the one-sided ground layer, and an insulating layer (Y) disposed between the differential wiring and the other ground layer, wherein the insulating layer (X) has a layer containing a resin and not containing a glass cloth; the insulating layer (X) or the insulating layer (Y) has a layer containing a glass cloth and a resin; and the thickness of the insulating layer (X) is equal to or less than the thickness of the insulating layer (Y).

First claim

The invention claimed is:

1. A multilayered transmission line plate comprising:
a pair of ground layers,
a differential wiring disposed between a one-sided ground layer of the pair of ground layers and the other ground layer,
an insulating layer (X) disposed between the differential wiring and the one-sided ground layer, and
an insulating layer (Y) disposed between the differential wiring and the other ground layer,

wherein
the insulating layer (X) has a layer containing a resin and not containing a glass cloth;
the insulating layer (X) or the insulating layer (Y) has a layer containing a glass cloth and a resin; and
the thickness of the insulating layer (X) is equal to or less than the thickness of the insulating layer (Y).

2. The multilayered transmission line plate according to claim 1 , comprising:
a pair of ground layers,
a differential wiring disposed between a one-sided ground layer of the pair of ground layers and the other ground layer,
an insulating layer (1-I), as the insulating layer (X), between the differential wiring and the one-sided ground layer, and
an insulating layer (1-II), as the insulating layer (Y), between the differential wiring and the other ground layer,

wherein
the insulating layer (1-I) is a layer containing a resin and not containing a glass cloth;
the insulating layer (1-II) is a layer containing a glass cloth and a resin; and
the thickness of the insulating layer (1-I) is equal to or less than the thickness of the insulating layer (1-II).

3. The multilayered transmission line plate according to claim 1 , comprising:
a pair of ground layers,
a differential wiring disposed between a one-sided ground layer of the pair of ground layers and the other ground layer,
an insulating layer (2-I), as the insulating layer (Y), between the differential wiring and the one-sided ground layer, and
an insulating layer (2-II), as the insulating layer (X), between the differential wiring and the other ground layer,

wherein
the insulating layer (2-II) comprises an insulating layer (2-IIA) and an insulating layer (2-IIB) laminated on the insulating layer (2-IIA);
the insulating layer (2-I) is a layer containing a glass cloth and a resin;
the insulating layer (2-IIA) is a layer containing a resin and not containing a glass cloth;
the insulating layer (2-IIB) is a layer containing a glass cloth and a resin; and
the thickness of the insulating layer (2-II) is equal to or less than the thickness of the insulating layer (2-I).

4. The multilayered transmission line plate according to claim 1 , wherein the layer containing a glass cloth and a resin is a layer containing a glass cloth and a resin composition, and a difference in dielectric constant between the glass cloth and the resin composition is 1.0 or less.

5. The multilayered transmission line plate according claim 1 , wherein the dielectric constant of the glass cloth is 5.0 or less.

6. The multilayered transmission line plate according to claim 1 , wherein the insulating layer (Y) has a layer containing a glass cloth and a resin.

7. The multilayered transmission line plate according to claim 1 , wherein the insulating layer (Y) is a layer containing a glass cloth and a resin.

Assignees

• Hitachi Chemical Co Ltd

Inventors

• Kondou Yuusuke
• Mizushima Etsuo
• Tanigawa Takao
• Nagai Yuki
• Fukuda Tomio
• Irino Tetsurou

Classifications

• H01P3/026

  Coplanar striplines [CPS] · CPC title

• H05K3/18

  using precipitation techniques to apply the conductive material · CPC title

• H05K1/036

  Multilayers with layers of different types · CPC title

• H05K3/4626 Primary

  characterised by the insulating layers or materials (H05K3/4688 takes precedence) · CPC title

• B32B17/04

  bonded with or embedded in a plastic substance · CPC title