Electric conductor track, method, and use

Patent metadata

Field	Value
Publication number	US-10438871-B2
Application number	US-201615773633-A
Country	US
Kind code	B2
Filing date	Sep 29, 2016
Priority date	Dec 3, 2015
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A conductor track which is designed in particular for use with ultrasonic welding. The invention also relates to an associated method and to an associated use.

First claim

The invention claimed is:

1. An electrical conductor track formed from a continuous section of material, comprising: a contact location provided on the continuous section of material, which is designed to be connected to an electrical contact by ultrasonic welding, a bonding location provided on the continuous section of material, which is designed to bond a bonding wire onto the conductor track, and at least one ultrasonic wave interruption element, which, when ultrasound is coupled in at the contact location, attenuates a propagation of ultrasonic waves along the continuous section of material from the contact location to the bonding location, the at least one ultrasonic wave interruption element comprising a hole through the continuous section of material, the hole surrounded on all sides by the continuous section of material.

2. The electrical conductor track as claimed in claim 1 ,
wherein the hole is arranged on a connecting line between the bonding location and the contact location.

3. The electrical conductor track as claimed in claim 1 , further comprising:
a plurality of ultrasonic wave interruption elements, which, when ultrasound is used at the contact location, each attenuate a propagation of ultrasonic waves from the contact location to the bonding location.

4. The electrical conductor track as claimed in claim 1 ,
wherein the electrical conductor track is part of a chip package, which contains a sensor.

5. The electrical conductor track as claimed in claim 1 ,
which is part of a leadframe.

6. An electrical conductor track formed from a continuous section of material, comprising:
a contact location provided on the continuous section of material, which is designed to be connected to an electrical contact by ultrasonic welding,
a bonding location provided on the continuous section of material, which is designed to bond a bonding wire onto the conductor track, and
at least one ultrasonic wave interruption element, which, when ultrasound is coupled in at the contact location, attenuates a propagation of ultrasonic waves along the continuous section of material from the contact location to the bonding location,
wherein the ultrasonic wave interruption element is a notch.

7. An electrical conductor track formed from a continuous section of material, comprising:
a contact location provided on the continuous section of material, which is designed to be connected to an electrical contact by ultrasonic welding,
a bonding location provided on the continuous section of material, which is designed to bond a bonding wire onto the conductor track, and
at least one ultrasonic wave interruption element, which, when ultrasound is coupled in at the contact location, attenuates a propagation of ultrasonic waves along the continuous section of material from the contact location to the bonding location,
wherein the ultrasonic wave interruption element is an angled portion.

8. An electrical conductor track formed from a continuous section of material, comprising:
a contact location provided on the continuous section of material, which is designed to be connected to an electrical contact by ultrasonic welding,
a bonding location provided on the continuous section of material, which is designed to bond a bonding wire onto the conductor track, and
at least one ultrasonic wave interruption element, which, when ultrasound is coupled in at the contact location, attenuates a propagation of ultrasonic waves along the continuous section of material from the contact location to the bonding location,
wherein the ultrasonic wave interruption element is an offset portion.

9. A method for connecting an electrical conductor track to an electrical contact, the electrical contract tract comprising: a contact location, a bonding location, and at least one ultrasonic wave interruption element, the method comprising:
providing the electrical conductor track,
applying the electrical contact to the contact location, and
coupling ultrasound in at the contact location to connect the electrical contact to the electrical conductor track,
wherein, when the ultrasound is coupled in at the contact location, the ultrasonic wave interruption element attenuates propagation of ultrasonic waves from the contact location to the bonding location.

10. The method as claimed in claim 9 ,
wherein a central line of the ultrasound in-coupling does not run through the bonding location.

11. The method as claimed in claim 9 ,
wherein a bonding wire is bonded at the bonding location of the electrical conductor track.

12. The method as claimed in claim 11 ,
wherein a central line of the ultrasound in-coupling does not run through the bonding location.

13. A method of ultrasonic welding an electrical contact to an electrical conductor track, comprising propagating ultrasonic waves to a bonding location of the conductor track and reducing the ultrasonic waves by at least one ultrasound wave interruption element.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Raukopf Svenja
• Biebricher Lothar
• Huber Dietmar
• Schillinger Jakob

Classifications

• H10W90/756

  between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title

• H10W72/07533

  Ultrasonic bonding, e.g. thermosonic bonding · CPC title

• H10W72/5449

  not being orthogonal to a side surface of the chip, e.g. fan-out arrangements · CPC title

• H10W72/932

  Plan-view shape, i.e. in top view · CPC title

• H10W99/00

  Subject matter not provided for in other groups of this subclass · CPC title