US5040047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Enhanced fluorescence polymers and interconnect structures using them
Assignee: Lockheed Martin Corp
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Filing: 1989-12-26
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Granted: 1991-08-13
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Expires: 2009-12-26
Abstract
Abstract The fluorescent characteristics of a polymer material are modified by the addition of a fluorescent dye which is fluorescent in response to light in a particular portion of the spectrum to render it fluorescent in response to light in that particular portion of the spectrum.
Inventors
- 👤 Herbert S. Cole
- 👤 Renato Guida
- 👤 Yung S. Liu
- 👤 Theodore R. Haller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0041; C09; C09K; C09K11/00; C09K11/06; H; H10; H10W; H10W70/00; H10W70/60; H10W70/611; H10W70/614; H10W70/099; H10W90/00; H10W90/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
144 words
In a high density interconnect structure of the type comprising a substrate having conductive regions thereon, one or more polymer dielectric layers disposed thereover and having apertures therein, one or more patterned conductive layers overlying selected ones of said dielectric layers and extending into selected ones of said apertures, the improvement comprising: at least one of said dielectric layers comprising a polymer which is substantially nonfluorescent in response to light in a particular portion of the spectrum whereby said polymer is not significantly fluorescent in response to light in said particular portion of the spectrum, a fluorescent dye which is fluorescent in response to light in said particular portion of the spectrum, and said dye being distributed in said polymer in sufficient quantity to render said at least one dielectric layer significantly fluorescent in response to light in said particular portion of the spectrum.
Claim 2
Dependent Claim
144 words
In a high density interconnect structure of the type comprising a substrate having conductive regions thereon, one or more polymer dielectric layers disposed thereover and having apertures therein, one or more patterned conductive layers overlying selected ones of said dielectric layers and extending into selected ones of said apertures, the improvement comprising: at least one of said dielectric layers comprising a polymer which is substantially nonfluorescent in response to light in a particular portion of the spectrum whereby said polymer is not significantly fluorescent in response to light in said particular portion of the spectrum, a fluorescent dye which is fluorescent in response to light in said particular portion of the spectrum, and said dye being distributed in said polymer in sufficient quantity to render said at least one dielectric layer significantly fluorescent in response to light in said particular portion of the spectrum.
Claim 3
Dependent Claim
16 words
The improvement recited in claim 1 wherein: said dye is substantially uniformly distributed in said polymer.
Claim 4
Dependent Claim
28 words
The improvement recited in claim 1 wherein: said polymer is selected from the group consisting of siloxane polyimides, polyetherimides, polyesters, polysulfones, benzocyclobutenes, polystyrene, polymethylmethacrylate, ethylene/vinylacetate and ethylene/maleic anhydride.
Claim 5
Dependent Claim
20 words
The improvement recited in claim 3 wherein: said dye is selected from the groups consisting of perylene, rubrene and diindenoperylene.
Claim 6
Dependent Claim
20 words
The improvement recited in claim 1 wherein: said dye is selected from the groups consisting of perylene, rubrene and diindenoperylene.
Claim 7
Dependent Claim
77 words
In a high density interconnect structure of the type comprising a substrate having conductive regions thereon, one or more polymer dielectric layers disposed thereover and having apertures therein, one or more patterned conductive layers overlying selected ones of said dielectric layers and extending into selected ones of said apertures, the improvement comprising: one or more of said dielectric layers including a fluorescence-enhancing dye which is fluorescent in response to light in a particular portion of the spectrum.
Claim 8
Dependent Claim
77 words
In a high density interconnect structure of the type comprising a substrate having conductive regions thereon, one or more polymer dielectric layers disposed thereover and having apertures therein, one or more patterned conductive layers overlying selected ones of said dielectric layers and extending into selected ones of said apertures, the improvement comprising: one or more of said dielectric layers including a fluorescence-enhancing dye which is fluorescent in response to light in a particular portion of the spectrum.
Claim 9
Dependent Claim
31 words
The high density interconnect structure recited in claim 6 wherein: said dielectric is selected from the group consisting of siloxane polyimides, polyetherimides, polyesters, polysulfones, benzocyclobutenes, polystyrene, polymethylmethacrylate, ethylene/vinylacetate and ethylene/maleic anhydride.
Claim 10
Dependent Claim
23 words
The high density interconnect structure recited in claim 7 wherein: said dye is selected from the groups consisting of perylene, rubrene and diindenoperylene.
Claim 11
Dependent Claim
23 words
The high density interconnect structure recited in claim 6 wherein: said dye is selected from the groups consisting of perylene, rubrene and diindenoperylene.
Claim 12
Dependent Claim
38 words
The improvement recited in claim 6 wherein: the polymer of one of said fluorescent-dye-containing dielectric layers melts at less than 200° C.; and said fluorescent-enhancing dye is thermally stable over a range of temperatures above said melting point.
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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) | 1994-08-12 | 1995-02-11 | 1995-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-12 | 1999-02-11 | 1999-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-12 | 2003-02-11 | 2003-08-13 | $7700.00 | Window Closed / Lapsed |