US3469015A - Conductive panel - Google Patents

Conductive panel Download PDF

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Publication number
US3469015A
US3469015A US609168A US3469015DA US3469015A US 3469015 A US3469015 A US 3469015A US 609168 A US609168 A US 609168A US 3469015D A US3469015D A US 3469015DA US 3469015 A US3469015 A US 3469015A
Authority
US
United States
Prior art keywords
panel
conductive
bus bar
conductive film
groove
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US609168A
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English (en)
Inventor
Robert A Warren
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sierracin Corp
Original Assignee
Sierracin Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sierracin Corp filed Critical Sierracin Corp
Application granted granted Critical
Publication of US3469015A publication Critical patent/US3469015A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B33/00—Electroluminescent light sources
    • H05B33/02—Details
    • H05B33/06—Electrode terminals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
    • B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
    • B64D15/12—De-icing or preventing icing on exterior surfaces of aircraft by electric heating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C1/00—Details
    • H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
    • H01C1/142—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors the terminals or tapping points being coated on the resistive element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • H05B3/86—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields the heating conductors being embedded in the transparent or reflecting material

Definitions

  • transparent radio frequency interference panels which include a conductive film together with bus bars for making contact thereto and which complete the shielding effect of the housing.
  • Such panels are conventionally con structed by forming the bus bars on a transparent substrate such as glass or a clear plastic and then depositing the conductive film so as to make good electrical contact to the bus bars.
  • the bus bars are then masked and a protective coating applied over the area of the substrate on which the conductive film has been deposited. The masking is then removed so that contact can be made between the bus bars and the metallic housing.
  • the present invention greatly simplifies the construction of such panels and considerably reduces their cost by permittiing the bus bar attachment to the conductive film to be made after the rest of the panel is completely fabricated, thereby eliminating the masking steps previously required.
  • This later attachment of the bus bar not only improves the optical quality of the panel but also permits the various deposition and coating steps to be performed on large sheets of substrate. These large sheets can then be cut into the desired sizes and shapes or can be stored 3 ,46 9,015 Patented Sept. 23, 1969 whole with the desired panels cut off when needed. Both the processing costs and the inventory costs can thus be substantially reduced.
  • bus bar material such as silver paste
  • a suitable bus bar material such as silver paste
  • a conductive ridge is formed which can be brought into engagement with the metal housing completely around the opening therein to be covered by the panel, thereby in effect making a complete electrical seal and assuring continuity of shielding.
  • FIGURE 1 is a cross-sectional view of a first embodiment of the bus bar attachment of the present invention
  • FIGURE 2 is a cross-sectional view of a second embodiment of the bus bar attachment of the present invention.
  • FIGURE 3 is a perspective view of a radio frequency interference panel constructed in accordance with the present invention.
  • FIGURE 4 is a perspective view, partly broken away, of a housing equipped with the radio frequency interference panel of the present invention.
  • FIGURE 1 there is shown a partial sectional view of a radio frequency interference panel constructed in accordance with the present invention.
  • a substrate 10 of clear plastic or glass has deposited thereon a thin transparent conductive film 12.
  • the conductive film 12 can be any of a number of well-known materials, such as finely divided metal particles. The techniques of applying such films are well known in the art and form no part of the present invention.
  • a protective coating 13 is disposed over the thin conductive film 12 to prevent it from being scratched or otherwise electrically or optically damaged. Suitable materials for this protective coating and the respective thicknesses necessary are also known to those skilled in the art.
  • the panel of the present invention no provision is initially made for forming bus bars by means of which contact may be made to the conductive film 12.
  • the panel can be stored for as long as necessary in any desirable size.
  • a suitable sized piece is selected and an angled groove 14 is formed in the desired pattern or configuration so as to expose the conductive film 12.
  • the groove or channel 14 may be formed in any suitable manner but it has been found that it can conveniently be formed by the scraping action of a sharp tool, such as a razor knife. This scraping action has a tendency to gall and delaminate the protective coat away from the conductive coat exposing an angled area of the conductive film along each edge of the groove.
  • the bus bar material 15 is now applied to the groove 14 by silk screening, spraying, painting, dipping, or the like.
  • the material 15 may be of silver paste, consisting of a mixture of silver flake and binder resin.
  • the solvent system in the bus bar material must be compatible with and must not attack the resin used in the protective coating 13 in order to secure a stable electrical contact with the conductive film 12. As shown, sufficient bus bar material 15 is used so that it protrudes above the surface of the protective coating 13. This makes contact to an external element easier but is not necessary.
  • FIGURE 2 a sheet indentical to that shown in FIGURE 1 is illustrated.
  • a groove is not formed in the upper surface of the panel but rather the edge is chamfered and the bus bar material 15 then applied.
  • the chamfering step can also be accomplished by the use of a knife or other sharp tool and need not be done until immediately before the panel is ready to be shipped.
  • FIGURE 3 there is shown a perspective view of the complete panel 20 made in the manner described.
  • the panel shown is rectangular with the groove 14 formed therein in a rectangular pattern.
  • the bus bar material 15 is deposited in the channel 14 and extends above the surface of the panel.
  • Such a panel is used in the manner shown in FIGURE 4.
  • a housing 16 of sheet metal or the like is provided with an opening 17 through which the apparatus positioned in the housing may be observed.
  • the panel 20 of FIGURE 3 is positioned over the opening 17 with the ridge of bus bar material 15 engaging the metal of the housing 16 completely around the opening 17, thus forming an electrical seal and integrating the conductive film 12 into the shield formed by the metal of the housing 16, thereby completely shielding the apparatus contained in the housing 16.
  • An electrical panel comprising: a base of nonconductive material; a layer of conductive material formed on said base; a layer of nonconductive material formed on said layer of conductive material, said layer of nonconductive material and said layer of conductive material having an angled cut formed therein exposing an angled surface of said layer of conductive material; and a body of conductive bus bar material deposited in said cut and engaging said layer of conductive material to permit external electrical contact to be made thereto.
  • An electrical panel comprising: a base of transparent nonconductive material; a thin transparent film of conductive material deposited on said base; a layer of transparent nonconductive material formed on said conductive film and having an upper surface, said layer of nonconductive material and said conductive film having an elongated angled groove formed therein with the wide portion of said groove being at said upper surface, said groove intersecting said conductive film exposing an elongated, angled surface of said film on each side of said groove; and a body of conductive bus bar material deposited in said groove and intimately engaging said exposed surfaces of said film to permit external electrical contact to be made thereto.
  • An electrical panel comprising: a base of transparent nonconductive material; a thin transparent film of conductive material deposited on said base; a layer of transport nonconductive materialformed on said conductive film an having an upper surface, said layer of nonconductive material and said conductive film having an elongated angled cutformed along at least one end thereof, said cut intersecting said conductive film exposing an elongated, angled surface of said film along said cut; and a body of conductive bus bar material deposited on said out and intimately engaging said exposed surface of said film to permit external electrical contact to be made thereto.
  • a radio frequency interference panel covering an. aperture in a conductive housing comprising: a base of transparent nonconductive material; a thin transparent film of conductive materialdeposited on said base; a layer of transparent nonconductive material formed on said conductive film and having an upper surface, said layer of nonconductive material and said conductive film having a continuous angled cut formed therein, said out intersecting said conductive film exposing an elongated, angled surface of said film; and a body of conductive bus bar material deposited in said out and intimately engaging said exposed surface of said film and extending above said upper surface, the area of said film and said bus bar material being at least equal to the area of said aperture with said bus bar material making electrical contact with said conductive housing.
  • a radio frequency interference panel covering an aperture in a conductive housing comprising: a baseof transparent nonconductive material; a thin transparent film of conductive material deposited on said base and covering an area of said base larger than said aperture; a layer of transparent nonconductive material formed on said conductive film and having an upper surface, said layer of nonconductive material and said conductive film having a continuous angled groove formed.
  • said groove intersecting said conductive film exposing an elongated, angled surface of said film on each side of said groove, said groove including an area of said conductive film-larger than said aperture; and a body of conductive bus bar material deposited in' said groove and intimately engaging said exposed surface of said film and extending above said upper surface with said bus bar material making electrical contact with said conductive housing at points around saidaperture.

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Laminated Bodies (AREA)
  • Electroluminescent Light Sources (AREA)
US609168A 1967-01-13 1967-01-13 Conductive panel Expired - Lifetime US3469015A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60916867A 1967-01-13 1967-01-13

Publications (1)

Publication Number Publication Date
US3469015A true US3469015A (en) 1969-09-23

Family

ID=24439623

Family Applications (1)

Application Number Title Priority Date Filing Date
US609168A Expired - Lifetime US3469015A (en) 1967-01-13 1967-01-13 Conductive panel

Country Status (6)

Country Link
US (1) US3469015A (de)
DE (1) DE1640057C3 (de)
ES (1) ES146417Y (de)
FR (1) FR1551435A (de)
GB (1) GB1212732A (de)
NL (1) NL6800428A (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102722A (en) * 1975-06-27 1978-07-25 Ppg Industries, Inc. Method of making heated laminated window
US4526811A (en) * 1983-10-27 1985-07-02 Loctite Corporation Method and composition for repairing rear window defoggers
US4785136A (en) * 1986-11-10 1988-11-15 Mollet John R Electromagnetic interference shielding cover
FR2618015A1 (fr) * 1987-07-08 1989-01-13 Danfoss As Resistance a couche electrique, et son procede de fabrication
US5362927A (en) * 1989-06-09 1994-11-08 Toshiba Lighting & Technology Corporation Thick film hybrid circuit board device
US5376759A (en) * 1993-06-24 1994-12-27 Northern Telecom Limited Multiple layer printed circuit board
US5386346A (en) * 1991-08-29 1995-01-31 Hubbell Incorporated Circuit card assembly with shielding assembly for reducing EMI emissions
US5463532A (en) * 1994-04-15 1995-10-31 Hubbell Incorporated Electrical circuit card with EMI shielding strip adapted to make contact with non-outwardly facing surface of card-receiving housing
US5491613A (en) * 1994-01-31 1996-02-13 Hubbell Incorporated Electrical circuit card with reduced EMI emission
US5543584A (en) * 1990-10-31 1996-08-06 International Business Machines Corporation Structure for repairing electrical lines
US5687470A (en) * 1991-11-06 1997-11-18 Nokia Mobile Phones Limited Method for forming an RF shielded enclosure
US6172880B1 (en) 1998-07-31 2001-01-09 Hubbell Incorporated Faceplate for an electronic circuit card for reducing EMI emissions between circuit cards inserted in a circuit card housing
US6547252B1 (en) * 1998-02-09 2003-04-15 Helmut Kahl Housing having a recess for locating part of a sealing material
US20070139936A1 (en) * 2005-12-15 2007-06-21 Schneider Rolf A O Electrical base connection
US9072162B2 (en) 2009-11-19 2015-06-30 Parker-Hannifin Corporation Conductive plastic overmold on shielded plastic window

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2943911B1 (de) * 1979-10-31 1981-06-04 Robert 7995 Neukirch Buck Elektronisches,beruehrungslos arbeitendes Schaltgeraet
DE3907486A1 (de) * 1989-03-08 1990-09-13 Karl Otto Platz Frontplatteneinsatz
RU2046564C1 (ru) * 1993-09-28 1995-10-20 Андрей Владимирович Володин Экранированное электронное устройство

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962584A (en) * 1929-01-08 1934-06-12 Davies Drury Norman Sheet of coated metal for earthed panels and other purposes
US3109958A (en) * 1961-06-22 1963-11-05 Sylvania Electric Prod Electroluminescent devices with overload protection
US3226473A (en) * 1963-03-04 1965-12-28 Sanders Associates Inc Encapsulated conductive paths with readily removable insulation
US3305623A (en) * 1964-10-19 1967-02-21 Metex Corp Shielded window construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962584A (en) * 1929-01-08 1934-06-12 Davies Drury Norman Sheet of coated metal for earthed panels and other purposes
US3109958A (en) * 1961-06-22 1963-11-05 Sylvania Electric Prod Electroluminescent devices with overload protection
US3226473A (en) * 1963-03-04 1965-12-28 Sanders Associates Inc Encapsulated conductive paths with readily removable insulation
US3305623A (en) * 1964-10-19 1967-02-21 Metex Corp Shielded window construction

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102722A (en) * 1975-06-27 1978-07-25 Ppg Industries, Inc. Method of making heated laminated window
US4526811A (en) * 1983-10-27 1985-07-02 Loctite Corporation Method and composition for repairing rear window defoggers
US4785136A (en) * 1986-11-10 1988-11-15 Mollet John R Electromagnetic interference shielding cover
FR2618015A1 (fr) * 1987-07-08 1989-01-13 Danfoss As Resistance a couche electrique, et son procede de fabrication
NL8801720A (nl) * 1987-07-08 1989-02-01 Danfoss As Elektrische laagweerstand en werkwijze voor de vervaardiging daarvan.
US5362927A (en) * 1989-06-09 1994-11-08 Toshiba Lighting & Technology Corporation Thick film hybrid circuit board device
US5543584A (en) * 1990-10-31 1996-08-06 International Business Machines Corporation Structure for repairing electrical lines
US5386346A (en) * 1991-08-29 1995-01-31 Hubbell Incorporated Circuit card assembly with shielding assembly for reducing EMI emissions
US5687470A (en) * 1991-11-06 1997-11-18 Nokia Mobile Phones Limited Method for forming an RF shielded enclosure
US5376759A (en) * 1993-06-24 1994-12-27 Northern Telecom Limited Multiple layer printed circuit board
US5491613A (en) * 1994-01-31 1996-02-13 Hubbell Incorporated Electrical circuit card with reduced EMI emission
US5463532A (en) * 1994-04-15 1995-10-31 Hubbell Incorporated Electrical circuit card with EMI shielding strip adapted to make contact with non-outwardly facing surface of card-receiving housing
US6547252B1 (en) * 1998-02-09 2003-04-15 Helmut Kahl Housing having a recess for locating part of a sealing material
US6172880B1 (en) 1998-07-31 2001-01-09 Hubbell Incorporated Faceplate for an electronic circuit card for reducing EMI emissions between circuit cards inserted in a circuit card housing
US20070139936A1 (en) * 2005-12-15 2007-06-21 Schneider Rolf A O Electrical base connection
US7513777B2 (en) 2005-12-15 2009-04-07 Doeppner Bauelemente Gmbh & Co. Kg Electrical base connection with transparent conductive layer
US9072162B2 (en) 2009-11-19 2015-06-30 Parker-Hannifin Corporation Conductive plastic overmold on shielded plastic window

Also Published As

Publication number Publication date
DE1640057C3 (de) 1978-04-20
GB1212732A (en) 1970-11-18
FR1551435A (de) 1968-12-27
ES146417Y (es) 1970-02-01
DE1640057A1 (de) 1970-10-29
DE1640057B2 (de) 1977-08-04
NL6800428A (de) 1968-07-15
ES146417U (es) 1969-07-16

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