Patent US6086979A successfully refreshed from Google Patents.
US6086979A
Expired / Lapsed
US
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Electromagnetically shielding bonding film, and shielding assembly and display device using such film
Assignee: Resonac Corp
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Filing: 1997-11-24
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Granted: 2000-07-11
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Expires: 2017-11-24
Abstract
Abstract An electromagnetic sheilding bonding film has a substantially transparent base film and an electroconductive metallic material layer geometrically patterned on the base film to have an aperture ratio of 50% or more. A bonding agent layer is placed at least over a part of the plastic base film not covered by the electroconductive metallic material layer and has a predetermined selectively given fluidity.
Inventors
- 👤 Hisashige Kanbara
- 👤 Hiroyuki Hagiwara
- 👤 Minoru Tosaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:24
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0094; H05K9/0096; H01; H01J; H01J29/00; H01J29/86; H01J29/867; H01J29/868; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/133308; G02F1/133334; H01J2211/00; H01J2211/20; H01J2211/34; H01J2211/44; H01J2211/446; H01J2329/00; H01J2329/86; H01J2329/868; H01J2329/869; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/28; Y10T428/2804; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
71 words
An Electromagnetic shielding bonding film, comprising: a substantially transparent plastic base film; an electroconductive metallic material layer which is geometrically patterned on said plastic base film so as to have an aperture ratio of 50% or more; and a bonding agent layer placed at least over a part of said plastic base film not covered by said electroconductive metallic material layer, wherein said bonding agent layer becomes fluid under predetermined conditions.
Claim 2
Dependent Claim
71 words
An Electromagnetic shielding bonding film, comprising: a substantially transparent plastic base film; an electroconductive metallic material layer which is geometrically patterned on said plastic base film so as to have an aperture ratio of 50% or more; and a bonding agent layer placed at least over a part of said plastic base film not covered by said electroconductive metallic material layer, wherein said bonding agent layer becomes fluid under predetermined conditions.
Claim 3
Dependent Claim
34 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent is placed substantially over entire surface of one side of said plastic base film carrying said geometrically patterned electroconductive metallic material layer.
Claim 4
Dependent Claim
18 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent becomes fluid under heat and/or pressure.
Claim 5
Dependent Claim
28 words
Electromagnetic shielding bonding film according to claim 3, wherein said bonding agent layer which flows under heat or pressure has a softening temperature of 200° C. or lower.
Claim 6
Dependent Claim
21 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent layer is curable by irradiation with active radiation energy.
Claim 7
Dependent Claim
19 words
Electromagnetic shielding bonding film according to claim 5, wherein said radiation energy consists of ultraviolet or electron beam radiation.
Claim 8
Dependent Claim
17 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent layer consists of thermosetting resin.
Claim 9
Dependent Claim
23 words
Electromagnetic shielding bonding film according to claim 7, wherein said thermosetting bonding agent layer has a cure index which is less than 60%.
Claim 10
Dependent Claim
19 words
Electromagnetic shielding bonding film according to claim 1, wherein said electroconductive metallic material layer is geometrically patterned by micro-lithography.
Claim 11
Dependent Claim
14 words
Electromagnetic shielding bonding film according to claim 9, wherein said micro-lithography consists of photo-lithography.
Claim 12
Dependent Claim
21 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent layer has a refraction index of 1.45 to 1.70.
Claim 13
Dependent Claim
23 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent layer has a larger thickness than said electroconductive metallic material layer.
Claim 14
Dependent Claim
18 words
Electromagnetic shielding bonding film according to claim 1, wherein said bonding agent layer contains an infrared absorbing agent.
Claim 15
Dependent Claim
41 words
Electromagnetic shielding bonding film according to claim 1, wherein said geometrically patterned electroconductive metallic material layer has a line width of 40 μm or less, a line spacing of 100 μm or more and a line thickness 40 μm or less.
Claim 16
Dependent Claim
32 words
Electromagnetic shielding bonding film according to claim 1, wherein said geometrically patterned electroconductive metallic material layer consists of a copper, aluminum or nickel layer having a thickness of 0.5 to 40 μm.
Claim 17
Dependent Claim
17 words
Electromagnetic shielding bonding film according to claim 10, wherein said photo-lithography consists of a chemical etching process.
Claim 18
Dependent Claim
25 words
Electromagnetic shielding bonding film according to claim 1, wherein said plastic film carrying said electroconductive metallic material layer consists of polyethylene-terephthalate film or polycarbonate film.
Claim 19
Dependent Claim
23 words
Electromagnetic shielding bonding film according to claim 1, wherein said electroconductive metallic material consists of copper which at least has a darkened surface.
Claim 20
Dependent Claim
18 words
Electromagnetic shielding bonding film according to claim 1, wherein said electroconductive metallic material consists of paramagnetic metallic material.
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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) | 2003-07-11 | 2004-01-10 | 2004-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-07-11 | 2008-01-10 | 2008-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-07-11 | 2012-01-10 | 2012-07-11 | $7700.00 | Window Closed / Lapsed |