US6399879B1
Expired / Lapsed
US
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Electromagnetic shield plate
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1999-10-27
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Granted: 2002-06-04
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Expires: 2019-10-27
Abstract
Abstract An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, provides good visibility and excellent electromagnetic shielding, and is easy to manufacture and permits the fabrication of a large-size plate in a simple manner.
Inventors
- 👤 Kayoko Ueda
- 👤 Hajime Kuwahara
- 👤 Toshiya Inoue
- 👤 Masakazu Shirakawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:14
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0094; H05K9/0096; H01; H01J; H01J2211/00; H01J2211/20; H01J2211/34; H01J2211/44; H01J2211/446
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
58 words
An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, wherein the geometric pattern comprises an electrically conductive paste which is a paste comprising electrically conductive particles or scales and a black colored binder.
Claim 2
Dependent Claim
58 words
An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, wherein the geometric pattern comprises an electrically conductive paste which is a paste comprising electrically conductive particles or scales and a black colored binder.
Claim 3
Dependent Claim
36 words
An electromagnetic shield plate according to claim 1 , wherein the line width is in the range of 10 μm to 40 μm and the line interval is in the range of 50 to 200 mesh.
Claim 4
Dependent Claim
32 words
A method for producing the electromagnetic shield plate according to claim 1 or 2 , wherein the geometric pattern is formed by printing on the substrate by using the electrically conductive paste.
Claim 5
Dependent Claim
26 words
A method for producing the electromagnetic shield plate according to claim 3 , wherein the printing is done by offset printing, screen printing or gravure printing.
Claim 6
Dependent Claim
22 words
A method for producing the electromagnetic shield plate according to claim 3 , wherein the printing is done by intaglio offset printing.
Claim 7
Dependent Claim
30 words
An electromagnetic shield plate according to claim 1 , wherein the geometric pattern comprises the electrically conductive paste which is covered with a metallic layer or a black electro-deposition layer.
Claim 8
Dependent Claim
34 words
A fabrication method for an electromagnetic shield plate according to claim 6 , wherein the geometric pattern formed from the electrically conductive paste is provided on the substrate, and plating is then applied thereon.
Claim 9
Dependent Claim
15 words
A front panel for a display comprising the electronic shield according to claim 6 .
Claim 10
Dependent Claim
29 words
A method of producing the-electromagnetic shield plate according to claim 6 , wherein the geometric pattern is Iformedrbr y prnting on the substrate by using the electrically conductive paste.
Claim 11
Dependent Claim
26 words
A method for producing the electromagnetic shield plate according to claim 9 , wherein the printing is done by offset printing, screen printing or gravure printing.
Claim 12
Dependent Claim
22 words
A method for producing the electromagnetic shield plate according to claim 9 , wherein the printing is done by intaglio offset printing.
Claim 13
Dependent Claim
29 words
An electromagnetic shield plate according to claim 1 , wherein the geometric pattern is formed by an intaglio offset printing on the substrate by using the electrically conductive paste.
Claim 14
Dependent Claim
20 words
A front panel for a display comprising the electromagnetic shield plate according to claims 1 , 2 or 12 .
Claim 15
Dependent Claim
80 words
An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, wherein the geometric pattern comprises an electrically conductive metal which is formed by burning a geometric pattern comprising an electrically conductive paste which is a paste comprising electrically conductive particles or scales and a black colored binder, and removing organic substance in the electrically conductive paste.
Claim 16
Dependent Claim
80 words
An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, wherein the geometric pattern comprises an electrically conductive metal which is formed by burning a geometric pattern comprising an electrically conductive paste which is a paste comprising electrically conductive particles or scales and a black colored binder, and removing organic substance in the electrically conductive paste.
Claim 17
Dependent Claim
30 words
An electromagnetic shield plate according to claim 14 , wherein the geometric pattern comprises the electrically conductive metal which is covered with a metallic layer or a black electro-deposition layer.
Claim 18
Dependent Claim
27 words
An electromagnetic shield plate according to claim 14 , he geometric pattern is formed by an intaglio offset printing on the by using the electrically conductive paste.
Claim 19
Dependent Claim
32 words
An electromagnetic shield plate according to claim 14 , further comprising the step of drying the geometric pattern at a temperature of from about 30 to about 250° C. prior to burning.
Claim 20
Dependent Claim
26 words
An electromagnetic shield plate according to claim 14 , wherein the burning is conducted at a temperature of from about 300° C. to about 700° C.
Claim 21
Dependent Claim
70 words
An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, wherein the geometric pattern comprises an electrically conductive metal oxide which is formed by burning a geometric pattern formed from a solution or a colloidal solution containing a compound which generates a metal oxide by burning.
Claim 22
Dependent Claim
70 words
An electromagnetic shield plate comprising a geometric pattern having a line width of 10 μm to 80 μm and a line interval of 50 to 250 mesh on a surface of a transparent substrate, wherein the geometric pattern comprises an electrically conductive metal oxide which is formed by burning a geometric pattern formed from a solution or a colloidal solution containing a compound which generates a metal oxide by burning.
Claim 23
Dependent Claim
39 words
An electromagnetic shield plate according to claim 14 , or 19 , wherein the line width is in the range of 10 μm to 40 μm and the line interval is in the range of 50 to 200 mesh.
Claim 24
Dependent Claim
31 words
An electromagnetic shield plate according to claim 19 , wherein the geometric pattern comprises the electrically conductive metal oxide which is covered with a metallic layer or a black electro-deposition layer.
Claim 25
Dependent Claim
29 words
A front panel for a display comprising the electromagnetic shield plate according to claims 14 , 19 , 15 , 21 , 16 , 17 , or 18 .
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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) | 2005-06-03 | 2005-12-03 | 2006-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-06-03 | 2009-12-03 | 2010-06-04 | $3760.00 | Window Closed / Lapsed |
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