US5250870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultra-thin surface mount crystal package
Assignee: CTS Corp
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Filing: 1992-03-25
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Granted: 1993-10-05
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Expires: 2012-03-25
Abstract
Abstract An ultra thin piezoelectric quartz crystal package can be realized by using adhesive dollops to compliantly mount a piezoelectric device within a thin package. The adhesive dollops maintain spacing between the upper and lower surfaces of the piezoelectric device (18) and the surfaces (13 and 15) of the housing that is comprised of upper and lower substrates (12 and 14).
Inventors
- 👤 Paul F. Fenlon
- 👤 Thomas A. Knecht
- 👤 Robert S. Witte
- 👤 William G. Skoda
- 👤 R. Victor Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:25
CPC Classifications
H; H03; H03H; H03H9/00; H03H9/02; H03H9/05; H03H9/10; H03H9/1007; H03H9/1014
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
96 words
A thin quartz crystal package comprised of: a housing enclosing a cavity, said housing comprised of: a lower substrate having at least one substantially planar inner surface; an upper substrate having at least one substantially planar inner surface; a piezoelectric element, within said cavity, having upper and lower surfaces; a first compliant, adhesive mounting dollop coupled to the inner surface of said lower substrate and the lower surface of said piezoelectric element; and a second compliant, adhesive mounting dollop coupled to the inner surface of said upper substrate and the upper surface of said piezoelectric element.
Claim 2
Dependent Claim
96 words
A thin quartz crystal package comprised of: a housing enclosing a cavity, said housing comprised of: a lower substrate having at least one substantially planar inner surface; an upper substrate having at least one substantially planar inner surface; a piezoelectric element, within said cavity, having upper and lower surfaces; a first compliant, adhesive mounting dollop coupled to the inner surface of said lower substrate and the lower surface of said piezoelectric element; and a second compliant, adhesive mounting dollop coupled to the inner surface of said upper substrate and the upper surface of said piezoelectric element.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 where at least one of said first and second compliant adhesive dollops are comprised of electrically conductive silicone adhesive.
Claim 4
Dependent Claim
30 words
The apparatus of claim 1 where said upper and lower substrates enclose a volume when they are coupled together, said volume having an interior height dimension less than 0.020 inches.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1 where said piezoelectric element includes upper and lower electrodes coupled to said upper and lower surfaces respectively.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1 where said upper and lower surfaces of said piezoelectric element are substantially planar.
Claim 7
Dependent Claim
22 words
The apparatus of claim 1 where at least one of said upper and lower surfaces of said piezoelectric element is substantially convex.
Claim 8
Dependent Claim
30 words
The apparatus of claim 6 where said upper and lower substrates enclose a volume when they are coupled together, said volume having an interior height dimension less than 0.030 inches.
Claim 9
Dependent Claim
19 words
The apparatus of claim 1 where at least one of said upper and lower substrates is comprised of alumina.
Claim 10
Dependent Claim
19 words
The apparatus of claim 1 where at least one of said upper and lower substrates is comprised of metal.
Claim 11
Dependent Claim
29 words
The apparatus of claim 1 where said upper and lower substrates are comprised of electrically conductive material and said first and second compliant adhesive mounting dollops are electrically insulative.
Claim 12
Dependent Claim
93 words
A thin quartz crystal package comprised of: a lower substrate having at least one substantially planar inner surface; an upper substrate having at least one substantially planar inner surface; a piezoelectric element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a first compliant, electrically conductive, adhesive mounting dollop coupled between the lower electrode and the inner surface of said lower substrate; and a second compliant, electrically conductive, adhesive mounting dollop coupled between the upper electrode and the inner surface of said upper substrate.
Claim 13
Dependent Claim
93 words
A thin quartz crystal package comprised of: a lower substrate having at least one substantially planar inner surface; an upper substrate having at least one substantially planar inner surface; a piezoelectric element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a first compliant, electrically conductive, adhesive mounting dollop coupled between the lower electrode and the inner surface of said lower substrate; and a second compliant, electrically conductive, adhesive mounting dollop coupled between the upper electrode and the inner surface of said upper substrate.
Claim 14
Dependent Claim
20 words
The apparatus of claim 11 where said first and second compliant adhesive dollops are comprised of silver filled silicone adhesive.
Claim 15
Dependent Claim
30 words
The apparatus of claim 11 where said upper and lower substrates enclose a volume when they are coupled together, said volume having an interior height dimension less than 0.020 inches.
Claim 16
Dependent Claim
18 words
The apparatus of claim 11 where said upper and lower surfaces of said piezoelectric element are substantially planar.
Claim 17
Dependent Claim
22 words
The apparatus of claim 11 where at least one of said upper and lower surfaces of said piezoelectric element is substantially convex.
Claim 18
Dependent Claim
30 words
The apparatus of claim 15 where said upper and lower substrates enclose a volume when they are coupled together, said volume having an interior height dimension less than 0.030 inches.
Claim 19
Dependent Claim
116 words
A thin quartz crystal package comprised of: a housing comprised of: a lower substrate having at least one substantially planar inner surface and an upper substrate having at least one substantially planar inner surface, said lower and upper substrates enclosing a volume when they are coupled together; a piezoelectric element within said volume, said element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a first compliant, electrically conductive, adhesive mounting dollop coupled between the lower electrode and the inner surface of said lower substrate; and a second compliant, electrically conductive, adhesive mounting dollop coupled between the upper electrode and the inner surface of said upper substrate.
Claim 20
Dependent Claim
116 words
A thin quartz crystal package comprised of: a housing comprised of: a lower substrate having at least one substantially planar inner surface and an upper substrate having at least one substantially planar inner surface, said lower and upper substrates enclosing a volume when they are coupled together; a piezoelectric element within said volume, said element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a first compliant, electrically conductive, adhesive mounting dollop coupled between the lower electrode and the inner surface of said lower substrate; and a second compliant, electrically conductive, adhesive mounting dollop coupled between the upper electrode and the inner surface of said upper substrate.
Claim 21
Dependent Claim
20 words
The apparatus of claim 17 where said first and second compliant adhesive dollops are comprised of silver filled silicone adhesive.
Claim 22
Dependent Claim
30 words
The apparatus of claim 17 where said upper and lower substrates enclose a volume when they are coupled together, said volume having an interior height dimension less than 0.020 inches.
Claim 23
Dependent Claim
18 words
The apparatus of claim 17 where said upper and lower surfaces of said piezoelectric element are substantially planar.
Claim 24
Independent Claim
21 words
The apparatus of 17 where at least one of said upper and lower surfaces of said piezoelectric element is substantially convex.
Claim 25
Independent Claim
21 words
The apparatus of 17 where at least one of said upper and lower surfaces of said piezoelectric element is substantially convex.
Claim 26
Dependent Claim
30 words
The apparatus of claim 21 where said upper and lower substrates enclose a volume when they are coupled together, said volume having an interior height dimension less than 0.030 inches.
Claim 27
Dependent Claim
118 words
A thin quartz crystal package comprised of: a housing comprised of: a lower substrate having at least one substantially planar inner surface and an upper substrate having at least one substantially planar inner surface, said lower and upper substrates enclosing a volume when they are coupled together; a piezoelectric element within said volume, said element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a plurality of compliant, electrically conductive, adhesive mounting dollops coupled between the lower electrode and the inner surface of said lower substrate; and a plurality of compliant, electrically conductive, adhesive mounting dollops coupled between the upper electrode and the inner surface of said upper substrate.
Claim 28
Dependent Claim
118 words
A thin quartz crystal package comprised of: a housing comprised of: a lower substrate having at least one substantially planar inner surface and an upper substrate having at least one substantially planar inner surface, said lower and upper substrates enclosing a volume when they are coupled together; a piezoelectric element within said volume, said element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a plurality of compliant, electrically conductive, adhesive mounting dollops coupled between the lower electrode and the inner surface of said lower substrate; and a plurality of compliant, electrically conductive, adhesive mounting dollops coupled between the upper electrode and the inner surface of said upper substrate.
Claim 29
Dependent Claim
116 words
A thin quartz crystal package comprised of: a housing comprised of: a lower substrate having at least one substantially planar inner surface and an upper substrate having at least one substantially planar inner surface, said lower and upper substrates enclosing a volume when they are coupled together; a piezoelectric element within said volume, said element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a plurality of compliant, electrically conductive, adhesive mounting dollops coupled between the lower electrode and the inner surface of said lower substrate; and a plurality of compliant, adhesive mounting dollops coupled between the upper electrode and the inner surface of said upper substrate.
Claim 30
Dependent Claim
116 words
A thin quartz crystal package comprised of: a housing comprised of: a lower substrate having at least one substantially planar inner surface and an upper substrate having at least one substantially planar inner surface, said lower and upper substrates enclosing a volume when they are coupled together; a piezoelectric element within said volume, said element having upper and lower surfaces and upper and lower electrodes coupled to said upper and lower surfaces respectively; a plurality of compliant, electrically conductive, adhesive mounting dollops coupled between the lower electrode and the inner surface of said lower substrate; and a plurality of compliant, adhesive mounting dollops coupled between the upper electrode and the inner surface of said upper substrate.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1996-10-04 | 1997-04-05 | 1997-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-04 | 2001-04-05 | 2001-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-04 | 2005-04-05 | 2005-10-05 | $7700.00 | Window Closed / Lapsed |