IP Library Granted Patent US 11,139,552
Granted Patent B1
US 11,139,552 · App. 16/867,218 · Granted Oct 5, 2021

Method of forming a semiconductor device

Inventors: Gareth Pryce Weale (New Hamburg, CA); Joseph Steffler (Waterloo, CA)
Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
H01Q1/2283H01L21/768H01L23/482H01L23/66
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Quick Facts
Patent No.
US 11,139,552
App. No.
16/867,218
Granted
Oct 5, 2021
Kind
B1
Abstract

In an embodiment, an antenna may be formed by applying an insulator to a package body and forming at least a portion of the antenna as a conductor on the insulator.

Claims (39)

1. A method of forming an antenna on a package for a semiconductor device comprising:

providing a substrate having interconnect conductors formed at least on an edge of the substrate;

providing semiconductor devices on the substrate;

providing a first protective coating on the substrate and covering the semiconductor devices, the first protective coating having sides that extend from the substrate upward away from the substrate wherein the first protective coating does not cover the interconnect conductors on the edge of the substrate;

forming a first conductor on the first protective coating wherein a first portion of the first conductor abuts and makes an electrical connection to one or more of the interconnect conductors on the edge of the substrate;

removing a portion of the first conductor to form a second conductor on the first protective coating and a third conductor on the first protective coating, the second conductor electrically connected to at least a first one of the interconnect conductors, the third conductor electrically connected to at least a second one of the interconnect conductors;

forming a first insulator covering the first conductor and the second conductor;

removing a portion of the first insulator to form an opening through the first insulator and expose a portion of the third conductor;

forming a fourth conductor on the first insulator wherein a portion of the fourth conductor extends into the opening and abuts the portion of the third conductor and makes an electrical connection thereto; and

removing portions of fourth conductor to form the fourth conductor into a pattern of an antenna wherein the fourth conductor makes an electrical connection through the third conductor to a first semiconductor device of the semiconductor devices wherein the first semiconductor device is configured to drive the fourth conductor with an RF signal.

2. The method of claim 1 wherein forming the first conductor on the first protective coating includes forming the first conductor on the sides of the first protective coating and on a top of the first protective coating that overlies one or more of the semiconductor devices.

3. The method of claim 1 wherein removing the portion of the first conductor includes forming the second conductor not directly electrically connected to the third conductor.

4. The method of claim 1 wherein forming a first insulator includes forming the first insulator covering all of the second conductor and the third conductor and thereafter forming the opening.

5. The method of claim 1 wherein removing the portion of the first conductor to form the second conductor includes forming the second conductor electrically connected to an interconnect conductor configured to be a ground reference.

6. The method of claim 1 wherein forming the first insulator includes forming the first insulator from silicon nitride.

7. The method of claim 1 wherein forming the first insulator includes sputtering silicon nitride.

8. The method of claim 1 wherein forming the first insulator includes forming the first insulator from Aluminum nitride.

9. The method of claim 1 wherein forming the first insulator includes forming the first insulator to have a dielectric constant no less than approximately 5.0.

10. The method of claim 1 wherein forming the first insulator includes forming the first insulator to have a dielectric constant no less than approximately 8.5.

11. The method of claim 1 wherein forming the fourth conductor includes forming the fourth conductor to have a pattern of a patch antenna.

12. The method of claim 1 wherein forming the fourth conductor includes forming the fourth conductor to have a pattern of one of an antenna configured to form a substantially symmetrical pattern or an antenna configured to form multiple patterns.

13. The method of claim 1 further including forming a second protective coating covering the fourth conductor and at least a portion of the first insulator.

14. The method of claim 1 further including forming a second protective coating covering the fourth conductor.

15. A semiconductor device package having an antenna comprising:

a substrate having interconnected semiconductor devices on the substrate, the semiconductor devices connected together by conductors on the substrate, the substrate having interconnect conductors at a periphery of the substrate;

a protective coating covering the semiconductor devices and having sides that extend away from the substrate, the protective coating not covering at least a portion of the interconnect conductors;

a first conductor on the sides of the protective coating and directly electrically connected to a first interconnect conductor of the interconnect conductors;

a second conductor on the protective coating and directly electrically connected to a second interconnect conductor of the interconnect conductors, the second conductor electrically connected to a first semiconductor device of the semiconductor devices wherein the first semiconductor device is configured to drive the second conductor with an RF signal;

an insulator on at least a portion of the first conductor and the second conductor; and

a third conductor on the insulator and electrically connected to the second conductor wherein the first semiconductor device is configured to drive the third conductor and the second conductor with the RF signal.

16. The semiconductor device package of claim 15 wherein the third conductor is configured in a pattern of an antenna.

17. A method of forming a semiconductor device having an antenna comprising:

providing a first protective coating covering a substrate having semiconductor devices on the substrate;

forming a first conductor and a second conductor overlying the first protective coating including forming the second conductor electrically connected to a first semiconductor device of the semiconductor devices;

forming a first insulator on the first conductor and the second conductor; and

forming a fourth conductor in a pattern of an antenna on the first insulator including electrically connecting the fourth conductor to the second conductor wherein the first semiconductor device is configured to apply an RF signal to the fourth conductor.

18. The method of claim 17 including forming the first conductor electrically connected to common reference of the substrate.

19. The method of claim 17 wherein forming the fourth conductor in the pattern of the antenna includes depositing conductor material in the pattern of the antenna.

20. The method of claim 17 wherein forming the fourth conductor in the pattern of the antenna includes forming conductor material on the first insulator and removing portions of the conductor material.

Assignments (3)
RELEASE OF SECURITY INTEREST IN PATENTS PREVIOUSLY RECORDED AT REEL 053613, FRAME 0621 Recorded Aug 17, 2023
From: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
To: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC; FAIRCHILD SEMICONDUCTOR CORPORATION
Reel/Frame 064618/0942 →
SECURITY INTEREST Recorded Aug 27, 2020
From: FAIRCHILD SEMICONDUCTOR CORPORATION; SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
To: DEUTSCHE BANK AG NEW YORK BRANCH, AS COLLATERAL AGENT
Reel/Frame 053613/0621 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 5, 2020
From: WEALE, GARETH PRYCE; STEFFLER, JOSEPH
To: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Reel/Frame 052575/0716 →