Low dielectric loss glasses for electronic devices

Patent metadata

Field	Value
Publication number	US-11629090-B2
Application number	US-202117405395-A
Country	US
Kind code	B2
Filing date	Aug 18, 2021
Priority date	Jan 18, 2019
Publication date	Apr 18, 2023
Grant date	Apr 18, 2023

Abstract

An article including a glass having that includes SiO 2 , Al 2 O 3 , and B 2 O 3 and least one of Li 2 O, Na 2 O, K 2 O, MgO, CaO, SrO, BaO, SnO 2 , ZnO, La 2 O 3 , F, and Fe 2 O 3 , wherein the glass includes a dielectric constant of about 10 or less and/or a loss tangent of about 0.01 or less, both as measured with signals at 10 GHz.

First claim

What is claimed is:

1. An article, comprising:
copper; and
a glass electrically-insulating layer supporting the copper, wherein the glass electrically-insulating layer comprises a glass comprising by mole percent of oxides:
SiO 2 from about 60% to about 80%;
Al 2 O 3 from 0% to about 13%;
B 2 O 3 from about 7% to 20%;
from above 0% to about 1% of at least one fining agent; and
RO from 3% to about 15%, wherein the RO are selected from the group consisting of CaO, MgO, BaO, and/or SrO;

wherein a ratio of MgO to RO is at least 0.38, but wherein the RO are mixed species such that the ratio of MgO to RO is no more than 0.86; and
wherein a ratio of B 2 O 3 :(Al 2 O 3 +SiO 2 ) is from about 0.13 to about 0.35; and
one or more polymeric substrate layers in combination with the glass electrically-insulating layer.

2. The article of claim 1 , wherein the fining agent comprises one or more of SnO 2 , Sb 2 O 3 , As 2 O 3 , and a halogen salt.

3. The article of claim 1 , wherein the glass further comprises MgO from about 1% to about 13% and CaO from about 0.1% to about 10%.

4. The article of claim 1 , wherein a ratio of RO:(Al 2 O 3 +(0.5*B 2 O 3 )) is from about 0.2 to about 0.9.

5. The article of claim 1 , wherein the glass further comprises:
SiO 2 from about 64% to about 75%;
Al 2 O 3 from about 1% to about 12%; and
B 2 O 3 from about 7% to about 15%.

6. The article of claim 1 , wherein the glass comprises no more than trace amounts of alkali metal oxides.

7. The article of claim 6 , wherein a ratio of the RO to Al 2 O 3 is greater than 1.

8. The article of claim 1 , wherein the ratio of MgO to RO is at least 0.5 and no more than 0.7.

9. The article of claim 8 , wherein the MgO>5 mol %.

10. The article of claim 9 , wherein the CaO>3 mol %.

11. The article of claim 1 , wherein the copper is in the form of copper films, and wherein glass electrically-insulating layer is disposed between the copper films.

Assignees

• Corning Inc

Inventors

• Boek Heather Debra
• Cai Ling
• Heine Jennifer Anella
• Lamberson Lisa Ann
• Tandia Adama
• Vargheese Kochuparambil Deenamma
• Weller Mark Owen

Classifications

• C03C2201/02

  Pure silica glass, e.g. pure fused quartz · CPC title

• C03C3/091 Primary

  containing aluminium · CPC title

• C03C3/089 Primary

  containing boron · CPC title

• C03C3/064

  containing boron · CPC title

• C03C3/083

  containing aluminium oxide or an iron compound · CPC title