Electrically conductive vias and methods for producing same

Patent metadata

Field	Value
Publication number	US-2024304463-A1
Application number	US-202418668527-A
Country	US
Kind code	A1
Filing date	May 20, 2024
Priority date	Mar 30, 2018
Publication date	Sep 12, 2024
Grant date	—

Abstract

An electrical component is provided by metallizing holes that extend through a glass substrate. The electrical component can be fabricated by forcing a suspension of electrically conductive particles suspended in a liquid medium through the holes. The suspension can be forced into the holes under an air pressure differential such as a vacuum force, a centrifugal force, or an electrostatic force. The liquid medium in the holes can be dried, and the particles can be sintered. The particles can further be packed in the hole. Alternatively or additionally, the particles can be pressed against the outer surfaces of the substrate to produce buttons.

First claim

1 . A method of metalizing a hole that extends in a substrate from a first surface to an opposed second surface, the method comprising the steps of:
introducing a first final fill into the hole at a first side of the substrate, such that the first final fill extends from the second surface toward the first surface, wherein the first side of the substrate defines the first surface; introducing a bulk fill into the hole at the first side of the substrate, such that the bulk fill extends from the first final fill toward the first surface; and introducing a second final fill into the hole at the first side of the substrate under one of an air pressure force, a centrifugal force, and an electrostatic force, such that the second final fill extends from the bulk fill to the first surface.

2 . The method as recited in claim 1 , wherein the introducing steps comprise introducing the first final fill, the bulk fill, and the second final fill as respective particles suspended in a liquid medium, and evacuating the liquid medium.

3 . The method as recited in claim 2 , further comprising the step of isostatically pressing the particles at least one of the first final fill, the bulk fill, and the second final fill.

4 . The method as recited in claim 2 , further comprising the step of sintering the particles after the final introducing step.

5 . The method as recited in claim 2 , wherein the particles of first final fill extends from the hole onto the second surface, and the particles of the second final fill extends from the hole onto the first surface.

6 . The method as recited in claim 5 , further comprising the step of hard pressing particles of the first and final fills against the second and first surfaces, respectively, so as to define a button.

7 . The method as recited in claim 2 , wherein the particles of the first and second final fill are smaller than the particles of the bulk fill.

8 . The method as recited in claim 1 , wherein the final fill is introduced into the hole under one of an air pressure force, a centrifugal force, and an electrostatic force

9 . The method as recited in claim 8 , wherein the bulk fill is introduced into the hole under one of an air pressure force, a centrifugal force, and an electrostatic force.

10 . The method as recited in claim 1 , wherein the bulk fill is introduced into the hole under one of an air pressure force, a centrifugal force, and an electrostatic force.

Assignees

• Samtec Inc

Inventors

• Nolet Alan
• Goia Daniel
• Hardikar Vishwas
• Kumar Ajeet
• Long Daniel
• Liotta Andrew

Classifications

• H10W70/692 Primary

  Ceramics or glasses · CPC title

• H10W70/635

  Through-vias · CPC title

• H10W70/095 Primary

  of vias therein · CPC title

• H01L23/15

  Electricity · mapped topic

• H01L23/49827

  Electricity · mapped topic