Alkali-free glass and glass plate
US-2022024805-A1 · Jan 27, 2022 · US
Laminate
US12404209B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12404209-B2 |
| Application number | US-202118024314-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 19, 2021 |
| Priority date | Sep 8, 2020 |
| Publication date | Sep 2, 2025 |
| Grant date | Sep 2, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A laminate according to an embodiment of the present invention includes at least one glass sheet and at least one resin layer, a relative dielectric constant of the glass sheet at 25° C. and a frequency of 2.45 GHz being 5 or less, and a dielectric loss tangent of the glass sheet at 25° C. and a frequency of 2.45 GHz being 0.003 or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. A laminate, comprising at least one glass sheet and at least one resin layer, a relative dielectric constant of the glass sheet at 25° C. and a frequency of 2.45 GHz being 5 or less, and a dielectric loss tangent of the glass sheet at 25° C. and a frequency of 2.45 GHz being 0.003 or less, wherein the glass sheet comprises at least 60 mol % of SiO 2 , from 1 to 15 mol % of Al 2 O 3 , from 20 to 30 mol % of B 2 O 3 , from 0 to 6.2 mol % of MgO+CaO+SrO+BaO, from 0 to 5 mol % of MgO, and from 0 to 5 mol % of CaO in a glass composition. 2. The laminate according to claim 1 , wherein the resin layer is a pre-preg in which a glass cloth is impregnated with a resin. 3. The laminate according to claim 1 , wherein a metal layer is formed on a surface of the glass sheet and/or inside the glass sheet. 4. The laminate according to claim 3 , wherein the metal layer comprises one or more of copper, silver, gold, aluminum, molybdenum, tungsten, nickel, tin, and an alloy of these metals. 5. The laminate according to claim 1 , wherein the glass sheet has a thickness from 5 to 50 μm. 6. The laminate according to claim 1 , wherein a through hole is formed in the glass sheet in a thickness direction. 7. The laminate according to claim 6 , wherein the through hole formed in the glass sheet has an inner diameter of 200 μm or less. 8. The laminate according to claim 6 , wherein a difference between a maximum value and a minimum value of the inner diameter of the through hole formed in the glass sheet is 100 μm or less. 9. The laminate according to claim 6 , wherein a metal layer is formed on an inner circumferential surface of the through hole formed in the glass sheet. 10. The laminate according to claim 1 , wherein the laminate is used in a multi-layer circuit board.
Assignees
Inventors
Classifications
Ceramics or glasses · CPC title
Metals · CPC title
After-treatment · CPC title
containing transition metals other than rare earth metals, e.g. Zr, Nb, Ta or Zn · CPC title
Metals · CPC title
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Frequently asked questions
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- What does patent US12404209B2 cover?
- A laminate according to an embodiment of the present invention includes at least one glass sheet and at least one resin layer, a relative dielectric constant of the glass sheet at 25° C. and a frequency of 2.45 GHz being 5 or less, and a dielectric loss tangent of the glass sheet at 25° C. and a frequency of 2.45 GHz being 0.003 or less.
- Who is the assignee on this patent?
- Nippon Electric Glass Co
- What technology area does this patent fall under?
- Primary CPC classification C03C25/007. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 02 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).