US6057175A
Expired / Lapsed
US
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Method of making encapsulated package
Assignee: Medtronic Inc
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Filing: 1999-04-02
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Granted: 2000-05-02
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Expires: 2019-04-02
Abstract
Abstract An encapsulated package includes a substrate having one or more conductive vias defined therethrough from a first side of the substrate to a second side of the substrate. Conductive bond pads are formed on the first side of the substrate in electrical contact with the one or more conductive vias and conductive package connection pads are formed on the second side of the substrate in electrical contact with the one or more conductive vias. A high voltage component is electrically connected to the conductive bond pads and an encapsulating material is formed over the first side of the substrate including the high voltage component and the conductive bond pads. The encapsulating material has a dielectric strength sufficient for use to block high voltages used in operation of the high voltage components. Further, a method of production allows for mass production of such encapsulated packages.
Inventors
- 👤 Juan G. Milla
- 👤 Mark R. Boone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 12:57
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; H; H10; H10W; H10W74/00; H10W74/10; H10W74/111; H10W74/114; H05; H05K; H05K1/00; H05K1/02; H05K1/0213; H05K1/0254; H05K1/11; H05K1/111; H05K1/112; H05K3/00; H05K3/22; H05K3/28; H05K3/284; H10W72/00; H10W72/071; H10W72/075; H10W72/851; H10W72/874; H10W72/884; H10W72/90; H10W72/951; H10W90/00; H10W90/701; H10W90/731; H10W90/734; H10W90/751; H10W90/754
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
289 words
A method of packaging one or more high voltage components, the method comprising the steps of: providing a substrate having a first substrate side and a second substrate side and including one or more device formation regions, each device formation region of the substrate formed by: extending at least two conductive vias through said substrate from said first substrate side to said second substrate side; forming a conductive bond pad formed on the first substrate side in electrical contact with each conductive via; and forming a conductive package connection pad on the second substrate side in electrical contact with each conductive via; providing at least one high voltage component adapted to fit to each such device formation region having at least two electrical terminals and operable with a potential greater than about 50 volts applied across said two electrical terminals; electrically connecting said at least two electrical terminals of said high voltage component to two conductive bond pads in each of the device formation regions on the first substrate side, the high voltage component being operable with a potential greater than about 50 volts applied through conductive package connection pads and said two electrical terminals; forming an encapsulating material over the one or more device formations regions of the substrate including the at least one high voltage component and the conductive bond pads in each device formation region, the encapsulating material after curing, having a dielectric constant greater than about 100 volts per mil; and singulating the encapsulated device formation regions resulting in one or more encapsulated packages enclosing at least one high voltage component within said encapsulating material, wherein the encapsulated package has a package to component size ratio in the range of about 1.2 to about 3.0.
Claim 2
Independent Claim
289 words
A method of packaging one or more high voltage components, the method comprising the steps of: providing a substrate having a first substrate side and a second substrate side and including one or more device formation regions, each device formation region of the substrate formed by: extending at least two conductive vias through said substrate from said first substrate side to said second substrate side; forming a conductive bond pad formed on the first substrate side in electrical contact with each conductive via; and forming a conductive package connection pad on the second substrate side in electrical contact with each conductive via; providing at least one high voltage component adapted to fit to each such device formation region having at least two electrical terminals and operable with a potential greater than about 50 volts applied across said two electrical terminals; electrically connecting said at least two electrical terminals of said high voltage component to two conductive bond pads in each of the device formation regions on the first substrate side, the high voltage component being operable with a potential greater than about 50 volts applied through conductive package connection pads and said two electrical terminals; forming an encapsulating material over the one or more device formations regions of the substrate including the at least one high voltage component and the conductive bond pads in each device formation region, the encapsulating material after curing, having a dielectric constant greater than about 100 volts per mil; and singulating the encapsulated device formation regions resulting in one or more encapsulated packages enclosing at least one high voltage component within said encapsulating material, wherein the encapsulated package has a package to component size ratio in the range of about 1.2 to about 3.0.
Claim 3
Dependent Claim
20 words
The method of claim 1, wherein the one or more device formation regions include an array of device formation regions.
Claim 4
Dependent Claim
78 words
The method of claim 2, wherein the step of forming an encapsulating material over the one or more device formations regions of the substrate includes: providing an encapsulation dam about a perimeter of the array of device formation regions on said first substrate side; filling an interior space defined by the dam with a liquid encapsulating material; and curing the encapsulating material to solidify it over said first substrate side and said one or more high voltage components.
Claim 5
Dependent Claim
136 words
The method of claim 1, wherein: the step of forming a conductive bond pad on the first substrate side further comprises the steps of: forming at least one or more conductive die bond pad in electrical contact with at least a first via; and forming at least one conductive wire bond pad formed in electrical contact with at least a second via; and the step of electrically connecting the at least one high voltage component in each device formation region further comprises the steps of: attaching at least a first active contact region of the at least one high voltage component to the conductive die bond pad using a conductive attachment material; and electrically connecting at least a second active contact region of the at least one high voltage component to the conductive wire bond pad.
Claim 6
Dependent Claim
41 words
The method of claim 1, wherein the at least one high voltage component includes a surface mount component having one or more contact regions each enabling electrical connection to one of the conductive bond pads formed on the first substrate side.
Claim 7
Dependent Claim
35 words
The method of claim 1, wherein the encapsulating material has a viscosity less than about 20,000 poise at 60 degrees centigrade on a Brookfield spindle No. 7 at a speed of 20 centimeters per second.
Claim 8
Dependent Claim
46 words
The method of claim 1, wherein the high voltage component is operable with a potential greater than about 100 volts applied across any two electrical terminals of the component, and the encapsulating material after curing has a dielectric strength greater than about 400 volts per mil.
Claim 9
Dependent Claim
27 words
The method of claim 1, wherein the substrate is a ceramic substrate and the one or more conductive vias defined therethrough are completely filled with conductive material.
Claim 10
Dependent Claim
27 words
The method of claim 1, wherein the substrate is a printed wiring board with the one or more conductive vias defined therethrough being plated though hole vias.
Claim 11
Dependent Claim
44 words
The method of claim 4, wherein the high voltage component is operable with a potential greater than about 100 volts applied across any two electrical terminals of the component, and the encapsulating material has a dielectric strength greater than about 400 volts per mil.
Claim 12
Dependent Claim
47 words
The method of claim 4, wherein the high voltage component is operable with a potential between about 100 volts and about 1000 volts applied across any two electrical terminals of the component; and the encapsulating material has a dielectric strength greater than about 400 volts per mil.
Claim 13
Dependent Claim
47 words
The method of claim 1, wherein the high voltage component is operable with a potential between about 100 volts and about 1000 volts applied across any two electrical terminals of the component; and the encapsulating material has a dielectric strength greater than about 400 volts per mil.
Claim 14
Independent Claim
332 words
A method of forming an implantable medical device comprising the steps of: providing a housing of the implantable medical device; enclosing a source of electrical power within the housing; providing a substrate having a first substrate side and a second substrate side and including one or more device formation regions, each device formation region of the substrate formed by: extending at least two conductive vias through said substrate from said first substrate side to said second substrate side; forming a conductive bond pad formed on the first substrate side in electrical contact with each conductive via; and forming a conductive package connection pad on the second substrate side in electrical contact with each conductive via; providing at least one high voltage component adapted to fit to each such device formation region having at least two electrical terminals and operable with a potential greater than about 50 volts applied across said two electrical terminals; electrically connecting said at least two electrical terminals of said high voltage component to two conductive bond pads in each of the device formation regions on the first substrate side, the high voltage component operable with a potential greater than about 50 volts applied through conductive package connection pads and said two electrical terminals; forming an encapsulating material over the one or more device formations regions of the substrate including the at least one high voltage component and the conductive bond pads in each device formation region, the encapsulating material after curing having a dielectric strength greater than about 100 volts per mil; singulating the encapsulated device formation regions resulting in one or more encapsulated packages enclosing at least one high voltage component within encapsulating material, whereby the encapsulated package has a package to component size ratio in the range of about 1.2 to about 3.0; and enclosing at least one encapsulated package within the housing coupled at the conductive package connection pads with said source of electrical power to supply said potential greater than about 50 volts thereto.
Claim 15
Independent Claim
332 words
A method of forming an implantable medical device comprising the steps of: providing a housing of the implantable medical device; enclosing a source of electrical power within the housing; providing a substrate having a first substrate side and a second substrate side and including one or more device formation regions, each device formation region of the substrate formed by: extending at least two conductive vias through said substrate from said first substrate side to said second substrate side; forming a conductive bond pad formed on the first substrate side in electrical contact with each conductive via; and forming a conductive package connection pad on the second substrate side in electrical contact with each conductive via; providing at least one high voltage component adapted to fit to each such device formation region having at least two electrical terminals and operable with a potential greater than about 50 volts applied across said two electrical terminals; electrically connecting said at least two electrical terminals of said high voltage component to two conductive bond pads in each of the device formation regions on the first substrate side, the high voltage component operable with a potential greater than about 50 volts applied through conductive package connection pads and said two electrical terminals; forming an encapsulating material over the one or more device formations regions of the substrate including the at least one high voltage component and the conductive bond pads in each device formation region, the encapsulating material after curing having a dielectric strength greater than about 100 volts per mil; singulating the encapsulated device formation regions resulting in one or more encapsulated packages enclosing at least one high voltage component within encapsulating material, whereby the encapsulated package has a package to component size ratio in the range of about 1.2 to about 3.0; and enclosing at least one encapsulated package within the housing coupled at the conductive package connection pads with said source of electrical power to supply said potential greater than about 50 volts thereto.
Claim 16
Dependent Claim
44 words
The method of claim 13, wherein the high voltage component is operable with a potential greater than about 100 volts applied across any two electrical terminals of the component, and the encapsulant material has a dielectric strength greater than about 400 volts per mil.
Claim 17
Dependent Claim
47 words
The method of claim 13, wherein the high voltage component is operable with a potential between about 100 volts and about 1000 volts applied across any two electrical terminals of the component; and the encapsulant material has a dielectric strength greater than about 400 volts per mil.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-05-02 | 2003-11-01 | 2004-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-02 | 2007-11-01 | 2008-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-02 | 2011-11-01 | 2012-05-02 | $7700.00 | Window Closed / Lapsed |