US5165956A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of encapsulating an electronic device with a silicone encapsulant
Assignee: Nokia Bell Labs
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Filing: 1991-09-27
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Granted: 1992-11-24
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Expires: 2011-09-27
Abstract
Abstract A silicone rubber potting compound contains an alkoxysilane (γ-glycidoxypropyltrimethoxysilane) as an adhesion promoter. Harmful effects caused by the adhesion promoter are alleviated by using as an additive a titanate having the form Ti(OR) 4 , where R is an isopropyl, butyl, octyl, or acetylacetonate.
Inventors
- 👤 Ching-Ping Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:11
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/10; H10W74/111; H10W74/127; H10W74/121; H10W74/40; H10W74/47; H10W74/476
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
82 words
A method for encapsulating an electronic device comprising the steps of: covering the electronic device with an uncured silicone resin having vinyl and or hydride functional terminations and containing an alkoxysilane as an adhesion promoter; and curing the silicone resin, wherein the improvement comprises: adding to the uncured silicone resin a quantity of a titanate having the form Ti(OR) 4 , where R is an isopropyl, butyl, octyl or acetylacetonate, whereby said titanate bonds with excess alkoxy functional components of the alkoxysilane.
Claim 2
Independent Claim
82 words
A method for encapsulating an electronic device comprising the steps of: covering the electronic device with an uncured silicone resin having vinyl and or hydride functional terminations and containing an alkoxysilane as an adhesion promoter; and curing the silicone resin, wherein the improvement comprises: adding to the uncured silicone resin a quantity of a titanate having the form Ti(OR) 4 , where R is an isopropyl, butyl, octyl or acetylacetonate, whereby said titanate bonds with excess alkoxy functional components of the alkoxysilane.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein: the alkoxysilane is γ-glycidoxypropyltrimethoxysilane.
Claim 4
Dependent Claim
24 words
The method of claim 2 wherein: the titanate is selected from the group consisting of titanium butyl titanate, titanium octyl titanate and titanium acetylacetonate.
Claim 5
Dependent Claim
26 words
The method of claim 3 wherein: the adding step comprises the step of making the uncured silicone resin to contain 0.05-4 weight percent of said titanate.
Claim 6
Dependent Claim
13 words
The method of claim 1 wherein: the electronic device comprises an integrated circuit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |