Electronic device comprising a support substrate and an encapsulating cover for an electronic component

Patent metadata

Field	Value
Publication number	US-10600704-B2
Application number	US-201816133065-A
Country	US
Kind code	B2
Filing date	Sep 17, 2018
Priority date	Sep 18, 2017
Publication date	Mar 24, 2020
Grant date	Mar 24, 2020

Abstract

A support substrate has a face above which at least one electronic component is fixed. A peripheral area of the face includes an annular local metal layer. An encapsulating cover for the electronic component includes a peripheral wall having an end edge that is mounted above the peripheral area. The annular metal local layer includes, at the periphery thereof, a series of spaced-apart teeth with notches formed therebetween. The teeth extend as far as the peripheral edge of the support substrate.

First claim

The invention claimed is:

1. An electronic device, comprising:
a support substrate having a face;
at least one electronic component mounted to the face;
wherein the support substrate includes, on a peripheral area of the face, an annular local metal layer;
an encapsulating cover for said electronic component, the encapsulating cover comprising a peripheral wall having an end edge that is mounted above said peripheral area and which is inner and distant from a peripheral edge of the support substrate;
wherein said annular metal local layer includes, at a periphery thereof, a plurality of spaced-apart teeth with notches formed between teeth, the teeth extending as far as the peripheral edge of the support substrate.

2. The device according to claim 1 , comprising a bonding material between the end edge of the peripheral wall of the encapsulating cover, this bonding material at least partially overlapping said annular local metal layer.

3. The device according to claim 2 , wherein the bonding material at least partially overlaps the teeth of the annular local metal layer.

4. A collective electronic device, comprising:
a collective support substrate having a face;
a plurality of electronic components mounted to the face at locations;
an annular metal local layer provided on a peripheral area of each location; and
a plurality of encapsulating covers for said plurality of electronic components, individual encapsulating covers separated at a distance from each other and mounted to the collective support substrate above said locations;
wherein each encapsulating cover comprises a peripheral wall having an end edge mounted above the peripheral area at a corresponding location;
wherein each annular local metal layer includes a plurality of spaced-apart teeth with notches formed between teeth, the teeth extending into spaces between adjacent encapsulating covers and further extending into a cutting area of the collective support substrate that is located between the adjacent encapsulating covers.

5. The device according to claim 4 , wherein the teeth of adjacent annular local metal layers of the collective support substrate are connected to each other.

6. The device according to claim 4 , wherein the teeth of adjacent annular local metal layers of the collective support substrate are at a distance from one another.

7. The device according to claim 4 , further comprising a ring of bonding material located between the end edge of the peripheral wall of each encapsulating cover and the annular metal local layer, the bonding material at least partially overlapping the annular local metal layer.

8. The device according to claim 7 , wherein the ring bonding material is made of solder.

9. The device according to claim 2 , wherein the bonding material is solder.

10. An electronic device, comprising:
a support substrate having a face and a peripheral edge;
an annular local metal layer at a peripheral area of the face adjacent the peripheral edge, wherein said annular local metal layer comprises a plurality of metal teeth that are separated from each other, the metal teeth having an outer edge aligned with the peripheral edge of the support substrate;
an electronic component mounted to the face in a position spaced apart from the plurality of metal teeth;
a metal cover over said electronic component, the metal cover comprising peripheral wall having an end edge that is mounted above said peripheral area; and
a solder material that secures the end edge of the metal cover to the plurality of metal teeth.

11. The electronic device of claim 10 , wherein an outer surface of the peripheral wall of the metal cover is spaced apart from the peripheral edge of the support substrate.

Assignees

• St Microelectronics Grenoble 2
• Stmicroelectronics Malta Ltd

Inventors

• Lopez Jerome
• Duca Roseanne

Classifications

• H01L23/49838

  Electricity · mapped topic

• H01L23/10 Primary

  Electricity · mapped topic

• H01L23/3121

  Electricity · mapped topic

• H01L21/50

  Electricity · mapped topic

• H10W95/00

  Packaging processes not covered by the other groups of this subclass · CPC title