Glass powder, dielectric material, sintered body, and high frequency circuit member

Patent metadata

Field	Value
Publication number	US-11939258-B2
Application number	US-202017632603-A
Country	US
Kind code	B2
Filing date	Jun 19, 2020
Priority date	Aug 8, 2019
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

A glass powder of the present invention is a glass powder, which is formed of alkali borosilicate glass, wherein the glass powder includes 0.1 mol % to 1.0 mol %, provided that 1.0 mol % is excluded, of Li2O+Na2O+K2O in a glass composition, has a molar ratio Li2O/(Li2O+Na2O+K2O) of from 0.35 to 0.65, a molar ratio Na2O/(Li2O+Na2O+K2O) of from 0.25 to 0.55, and a molar ratio K2O/(Li2O+Na2O+K2O) of from 0.025 to 0.20, and has a specific dielectric constant at 25° C. and 16 GHz of from 3.5 to 4.0 and a dielectric dissipation factor at 25° C. and 16 GHz of 0.0020 or less.

First claim

The invention claimed is:

1. A glass powder, which is formed of alkali borosilicate glass, wherein the glass powder comprises 0.1 mol % to 1.0 mol %, provided that 1.0 mol % is excluded, of Li 2 O+Na 2 O+K 2 O in a glass composition, has a molar ratio Li 2 O/(Li 2 O+Na 2 O+K 2 O) of from 0.35 to 0.65, a molar ratio Na 2 O/(Li 2 O+Na 2 O+K 2 O) of from 0.3 to 0.55, and a molar ratio K 2 O/(Li 2 O+Na 2 O+K 2 O) of from 0.025 to 0.15, and has a specific dielectric constant at 25° C. and 16 GHz of from 3.5 to 4.0 and a dielectric dissipation factor at 25° C. and 16 GHz of 0.0020 or less.

2. A dielectric material, comprising:
50 mass % to 100 mass % of a glass powder; and
0 mass % to 50 mass % of a ceramic filler powder,
wherein the glass powder is the glass powder of claim 1 , and
wherein the ceramic filler powder is one kind or two or more kinds selected from the group consisting of: α-quartz; α-cristobalite; β-tridymite; α-alumina; mullite; zirconia; and cordierite.

3. A sintered body, which is obtained by sintering a dielectric material, wherein the dielectric material is the dielectric material of claim 2 .

4. The sintered body according to claim 3 , wherein the sintered body has a specific dielectric constant at 25° C. and 16 GHz of from 3.5 to 6.0 and a dielectric dissipation factor at 25° C. and 16 GHz of 0.0030 or less.

5. A high-frequency circuit member, comprising a dielectric layer, wherein the dielectric layer is formed of the sintered body of claim 3 .

6. A high-frequency circuit member, comprising a dielectric layer, wherein the dielectric layer is formed of the sintered body of claim 4 .

Assignees

• Nippon Electric Glass Co

Inventors

• Umayahara Yoshio

Classifications

• C03C14/004 Primary

  the non-glass component being in the form of particles or flakes · CPC title

• C03C3/089 Primary

  containing boron · CPC title

• C03C4/16

  for dielectric glass · CPC title

• C03C12/00 Primary

  Powdered glass (C03C8/02 takes precedence); Bead compositions · CPC title

• H01B3/087 Primary

  Chemical composition of glass · CPC title