GB2338911A - Conductive adhesive tape and CRT employing the same - Google Patents
Conductive adhesive tape and CRT employing the same Download PDFInfo
- Publication number
- GB2338911A GB2338911A GB9915628A GB9915628A GB2338911A GB 2338911 A GB2338911 A GB 2338911A GB 9915628 A GB9915628 A GB 9915628A GB 9915628 A GB9915628 A GB 9915628A GB 2338911 A GB2338911 A GB 2338911A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- conductive
- insulation layer
- crt
- conductive layer
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/22—Plastics; Metallised plastics
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/863—Passive shielding means associated with the vessel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
2338911 CONDUCTIVE ADBESIVE TAPE AND CRT EMPLOYING THE SAME The present
invention relates to a cathode ray tube (CRT), and more particularly, to a conductive adhesive tape for shielding electromagnetic radiation and a CRT employing the same.
As it has been found that electromagnetic radiation radiated from a CRT inflicts a harmful influence upon the human body, regulation of electromagnetic emission has gradually become stricter. Therefore, it is necessary to maximize shielding of electromagnetic radiation and while also providing electrical insulation. In order to satisfy the restrictions of electromagnetic radiation specified by the Swedish 10 Confederation Of professional employees (TCO) which is one of the worlds leading organizations in testing for regulation of harmful electromagnetic radiation, a transparent conductive layer deposited on the screen surface of a CRT must satisfy the following characteristics. The resistance of a transparent conductive layer used as an anti- eIectrifying film must be 101 15 0/cin' or less. Also, a conductive layer used as an electromagnetic radiation shielding film must have a resistance of 103 12/cml or less, a hardness of 5 H or higher, and a transparency of 95 % or higher. The transparent conductive layer satisfying the above conditions may include platinum, gold or indium tin oxide (ITO).
2 FIG. 1 illustrates an example of a CRT having a transparent conductive layer for shielding electromagnetic radiation coated on the screen surface thereof.
The CRT includes a panel 13 having a screen surface 12 with a fluorescent layer (not shown) deposited on its inner surface, a funnel 14 attached to the panel 13, an electron gun 15 disposed in the neck portion of the funnel 14, and a deflection yoke 16 mounted on the cone portion of the funnel 14. A transparent conductive layer 17 is formed on the screen surface 12 using ITO having a resistance equal to or lower than 10' 0/cm' per unit area. The transparent conductive layer 17 is electrically connected to an explosion proof band 11 by a conductive tape 19 made of copper or aluminum. Also, an outer conductive layer 18 is coated on the outer surface of the funnel 14.
An electron beam emitted from the electron gun 15 of the CRT having the above-described construction is deflected by the deflection yoke 16 and lands on the fluorescent layer. The landing electron beam excites the phosphors. In the course of the above- described operation, the electromagnetic radiation from the deflection yoke are blocked by the transparent conductive layer 16 and the outer conductive layer 19, thereby suppressing the electromagnetic radiation from being emitted to the outside of the CRT.
In order to effectively block electromagnetic radiation, the resistance of the transparent conductive layer 17 coated on the screen surface 12 must be equal to or less than 103 Q/cm2.
However, if the transparent conductive layer 17 is formed of a material having a resistance as low as described above, such as ITO, the manufacturing cost of CRTs increases.
3 To overcome the above problem, there has been proposed a method in which ITO having a resistance less dm or equal to 101 Q/cmI is used, or an inverse pulse voltage having a waveform. synchronized with that of a voltage applied to the deflection yoke is applied to the outer conductive layer. However, in the former case, electromagnetic radiation is not sufficiently blocked. In the latter case, a separate circuit for applying an inverse pulse voltage must be provided. Also, it is difficult to synchronize the inverse pulse voltage with the deflection yoke.
CRTs for absorbing some electromagnetic radiation from the deflection yoke are disclosed in U.S. Patent Nos. 5,451,840, 5,635,793 and 5,304,891.
The disclosed CRTs are constructed such that a portion of the outer conductive layer extends to the outer circumferential surface of the cone portion on which the deflection yoke is mounted, a piece connected to the outer conductive layer of the funnel extends to the cone portion on which a deflection yoke is mounted, or a conductive layer extends from the outer conductive layer to the cone portion on which the deflection yoke is mounted.
However, these CRTs involve very complicated manufacturing processes, or resistance of the conductive layer increases due to an adhesive layer. Thus, it is not possible to attain a sufficient effect in blocking electromagnetic radiation.
According to one aspect of the present invention, there is provided a conductive adhesive tape including an insulation layer, and an adhesive conductive layer formed of a conductive material and an acryl-based resin on one surface of the insulation layer.
4 The conductive adhesive tape of the invention improves the electrical connection capability between an explosion proof band and a transparent conductive layer and can absorb electromagnetic radiation generated from a deflection yoke. A metallic thin film may be further formed between the insulation layer and the adhesive conductive layer.
According to another aspect of the present invention, there is provided a cathode ray tube (CRT) including a panel having a screen surface, a funnel attached to the panel and having a cone portion and a neck portion, an electron gun mounted on the neck portion, a deflection yoke mounted on the cone portion, an outer conductive layer coated on the outer circumferential surface of the funnel, a transparent conductive layer coated on the screen 10 surface, an explosion proof band mounted on the outer circumferential surface of the funnel, and means for absorbing electromagnetic radiation, the means electrically connected to the outer conductive layer and adhered to the cone portion and the neck portion, and having an insulation layer, a conductive adhesive layer formed of a conductive material and an acrylbased resin on one surface of the insulation layer, and a metallic thin film interposed between 15 the conductive adhesive layer and the insulation layer. According to still another aspect of the present invention, there is provide a cathode ray tube (CRT) including a panel having a screen surface, a funnel attached to the panel and having a cone portion and a neck portion, an electron gun mounted on the neck portion, a deflection yoke mounted on the cone portion, an outer conductive layer coated on the outer 20 circumferential surface of the funnel, a transparent conductive layer coated on the screen surface, an explosion proof band mounted on the outer circumferential surface of the funnel, and means for absorbing electromagnetic radiation, the means adhered to the inner circumferential surface of the deflection yoke, and having an insulatien layer, a conductive adhesive layer formed of a conductive material and an acryl-based resin on one surface of the insulation layer, and a metallic thin film interposed between the conductive adhesive layer and the insulation layer, and grounded.
Examples of the present invention will now be described in detail with reference to and as shown in the accompanying drawings in which:
FIG. I is a perspective view of a conventional CRT; FIG. 2 is a perspective view of conductive adhesive tape according to the present invention; FIG. 3 is a cross-sectional view of conductive adhesive tape according to the present invention; FIG. 4 is a perspective view of a CRT according to an embodiment of the present invention; FIG. 5 is a partially enlarged perspective view illustrating another example of electromagnetic radiation absorbing means according to the present invention; FIG. 6 is a perspective view of a CRT according to another embodiment of the present invention; and FIG. 7 is a graph showing electromagnetic radiation.
As shown in FIG. 2, a conductive adhesive tape according to an embodiment of the present invention includes an insulation layer 21 formed of synthetic resin and an adhesive conductive layer 22 formed of a conductive material and an acryl-based resin on one surface of the insulation layer 21.
The insulation layer 21 is formed by adding a far-infrared-ray-radiating material such as bioceramic to a heat resistive polyester resin. The conductive material of the adhesive conductive layer 22 is made of graphite or conductive metal powder. In the case of graphite 6 conductive material, nickel is preferably further included as an auxiliary conductive material.
Also, since it is difficult to form a low resistance layer of several tens of angstroms (a) by using graphite, a metallic thin film. 23 is disposed between the adhesive conductive layer 22 and the insulation layer 21 for the purpose of reducing the resistance. Preferably, the metallic thin film 23 is made of aluminum. The thickness of the conductive layer 22 is preferably 30-40jum, and the thickness of the metallic thin film 23 is preferably 25-30 Am.
As shown in FIG. 3, a far infrared ray radiation layer 24 made of bioceramic contained in resin may be formed between the metallic thin fibn 23 and the insulation layer 21. In this case, a far infrared ray radiation material is not necessarily included in the insulation layer 21.
FIG. 4 shows an example of a CRT using conductive adhesive tape.
As shown in FIG. 4, the CRT includes a panel 30 having a screen surface 31 with a fluorescent layer (not shown) formed in an inner surface thereof, and a funnel 40 attached to the panel 30, the ftmel having a cone portion 41 and a neck portion 42. An outer conductive layer 43 made of graphite is formed on the outer circumferential surface of the funnel 40. An electron gun 50 is mounted in the neck portion 42. A deflection yoke 60 for deflecting electron beam emitted from the electron gun 50 is mounted on the cone portion 41.
An explosion proof band 70 is installed at a portion where the panel 30 and the funnel 40 are attached to each other. A transparent conductive layer 80 having a resistance per unit area greater than 105 Ofem' and equal to or less than 106 fl/CMI is formed on the screen surface 7 31. The transparent conductive layer 80 may be formed of any transparent material having a resistance in the above range, and is preferably formed of ITO. The transparent conductive layer 80 and the outer conductive layer 43 are electrically connected to the explosion proof band 70 by conductive. connection means. As the conductive connection means, the convention conductive tape or the conductive adhesive tape 20 described above with reference to FIGS. 2 and 3, is employed.
An electromagnetic absorbing means for absorbing electromagnetic radiation from the deflection yoke 60 is formed in the funnel 40. The electromagnetic absorbing means includes a conductive adhesive tape 20' extending from the outer conductive layer 43 over the neck portion 41 via the cone portion 42 where the deflection yoke 60 is mounted. The conductive adhesive tape 20' is preferably identical to that shown in FIG. 2 or 3 but is not limited thereto.
While the CRT is driven, electromagnetic radiation is radiated from the deflection yoke 60 and other parts. Also, electron beams emitted from the electron gun 50 land on the fluorescent layer so that the outer surface of the screen surface 31 having the fluorescent layer coated on its inner surface is charged with electrons. The thus generated electromagnetic radiation and electrons charged on the screen surface 31 are absorbed by the transparent conductive layer 80 formed on the screen surface 31 and are then emitted to the outside by the conductive adhesive tape 20 and the explosion band 70 which is grounded.
Electromagnetic radiation from the deflection yoke 60 is absorbed into the conductive adhesive tape 20' disposed between the inner circumferential surface of the deflection yoke and the outer circumferential surface of the neck portion 41 to then be emitted through 8 the outer conductive layer 43 and the explosion proof band 70. Therefore, it is possible to prevent the electromagnetic radiation from the deflection yoke 60 or other parts of the CRT from being emitted back and forth with respect to the CRT.
As shown in FIG. 5, the electromagnetic radiation absorbing means is alternatively constructed such that an insulation layer 63, a conductive layer 64 and an adhesion layer 65 are sequentially formed on the surface of a wire 62 which forms a coil 61 of a deflection yoke. The conductive layer 64 is grounded, although not shown. In this case, electromagnetic. radiation from the deflection yoke is emitted to the outside through the grounded conductive layer 64.
Another example of the electromagnetic radiation absorbing means is shown in FIG. 6.
Referring to FIG. 6, a conductive adhesive tape 20" is adhered to the inner surface of the deflection yoke 60, and the conductive adhesive tape 20" is grounded. While the CRT is driven, electromagnetic radiation from the deflection yoke 60 is absorbed into the grounded conductive adhesive tape 20".
As described above, since the electromagnetic radiation from the deflection yoke 60 is absorbed by the electromagnetic radiation absorbing means, an electromagnetic radiation shielding effect can be sufficiently attained even if the transparent conductive layer 80 coated on the screen surface 31 is formed of a transparent material having a relatively high resistance per unit area, that is, greater thazi 1 x 1050/cm and equal to or less than 1 x 106 9/cm2, for example, ITO. Therefore, since a material having a high resistance per unit area is employed in a transparent conductive layer, the manufacturing cost can be reduced.
9 Also, since the far infrared ray radiation layer 24 is formed on the respective conductive tapes 20, 20' and 20" of various embodiments of the present invention, or a far infrared ray radiating material is contained in the insulation layer 21, far infrared rays which are beneficial to the human body are radiated from the far infrared ray radiation layer 24 or the insulation layer 21.
These effects will become more apparent in the following example.
EXAWLE In the CRT used in this example according to the present invention, an explosion proof band and a transparent conductive layer are connected by the conductive adhesive tape (20 of FIG.
4) of the present invention. The electromagnetic radiation absorbing means, that is, the conductive adhesive tape (20' of FIG. 4), was extended from the outer conductive layer to the neck portion via the cone portion. Conversely, in the CRT of a comparative example, an explosion proof band and a a-ansparent conductive layer were connected using conventional conductive tape. While varying resistances per unit area of transparent conductive layers coated on the respective screen surfaces of the CRT of the example of the present invention and the CRT of the comparative example, in the range of 1 x W Q/cm to 9 x 101 0/cml, the electromagnetic radiation intensities thereof were measured. These results are shown in FIG. 7.
As shown in FIG. 7, in the comparative example, electromagnetic radiation intensities in the very low frequency (VLF) region (abbreviated as VLFE), were 0.4 V/m and 1. 9 V/m for resistances per unit area of I x l(r 0/cml and I x 109 O/cm', respectively. In the example of the present invention, VLFEs were 0. 1 V/m and 1. 23 V/m for resistances per unit area of 1 x Hr 0/cm' and 1 x 10' 12/cm, respectively, from which it is understood that the VLFE in the example of the present invention is noticeably reduced, compared to that in the comparative example.
Therefore, according to the present invention, electromagnetic radiation can be sufficiently blocked to be equal to or less than the limited value satisfying the TCO guide line (indicated by a dotted line of FIG. 7), by setting a resistance of a transparent conductive layer as equal to or less than 1 x 10' Q/cm.
Claims (20)
1. A conductive adhesive tape comprising:
an insulation layer; and an adhesive conductive layer formed of a conductive material and an acryI- based resin on one surface of the insulation layer, whereby electromagnetic radiation is shielded.
2. The conductive adhesive tape according to claim 1, wherein the conductive material is graphite.
3. The conductive adhesive tape according to claim 2, wherein the conductive material further includes nickel.
4. The conductive adhesive tape according to claim 1, wherein a metallic thin film is formed between the insulation layer and the adhesive conductive layer.
5. The conductive adhesive tape according to claim 4, wherein a far infrared radiation layer is formed between the insulation layer and the metallic thin film.
6. The conductive adhesive tape according to claim 1, wherein a far infrared radiating 15 material is mixed with the insulation layer.
7. A cathode ray tube (CRT) comprising: a panel having a screen surface; a funnel attached to the panel and having a cone portion and a neck portion; an electron gun mounted on the neck portion; 12 a deflection yoke mounted on the cone portion; an outer conductive layer coated on the outer circumferential surface of the funnel; a transparent conductive layer coated on the screen surface; an explosion proof band mounted on the outer circumferential surface of the funnel; means for absorbing electromagnetic radiation, the means electrically connected to the outer conductive layer and adhered to the cone portion and the neck portion, and having an insulation layer, a conductive adhesive layer formed of a conductive material and an acryl based resin on one surface of the insulation layer, and a metallic thin fibn interposed between the conductive adhesive layer and the insulation layer.
8. The CRT according to claim 7, wherein the conductive material is graphite.
9. The CRT according to claim 8, wherein the conductive material further includes nickel.
10. The CRT according to claim 7, wherein a metallic thin film is formed between the insulation layer and the adhesive conductive layer.
11. The CRT according to claim 7, wherein a far infrared radiating material is mixed with the insulation layer.
12. The CRT according , to claim 11, wherein a far infrared radiation layer is formed between the insulation layer and the metallic thin film.
13 13. The CRT according to any one of claims 7 through 11, wherein the explosion proof band and the transparent conductive layer are electrically connected by a conductive tape.
14. The CRT according to claim 7, wherein the transparent conductive layer is formed of a material having a resistance per unit area in the range of I x 101 0/cm' to 1 x 106 O/cm.
15. The CRT according to claim 14, wherein a far infrared radiation layer is formed between the insulation layer and the metallic thin film.
16. A cathode ray tube (CRT) comprising: a panel having a screen surface; 10 a funnel attached to the panel and having a cone portion and a neck portion; an electron gun mounted on the neck portion; a deflection yoke mounted on the cone portion; an outer conductive layer coated on the outer circumferential surface of the funnel; a transparent conductive layer coated on the screen surface; 15 an explosion proof band mounted on the outer circumferential surface of the funnel; and means for absorbing electromagnetic radiation, the means adhered to the inner circumferential surface of the deflection yoke, and having an insulation layer, a conductive adhesive layer formed of a conductive material and an acryl-based resin on one surface of the insulation layer, and a metallic thin film interposed between the conductive adhesive layer and the insulation layer, and grounded.
14
17. The CRT according to claim 16, wherein the conductive material is graphite.
18. The CRT according to claim 17, wherein the conductive material further includes nickel.
19. The CRT according to claim 16, wherein a metallic thin film is formed between the insulation layer and the adhesive conductive layer.
20. The CRT according to any one of claims 16 through 19, wherein the explosion proof band and the transparent conductive layer are electrically connected by a conductive tape.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980026643A KR20000007355A (en) | 1998-07-02 | 1998-07-02 | Cathode ray tube |
| KR1019980026644A KR100300401B1 (en) | 1998-07-02 | 1998-07-02 | Cathod ray tube |
| KR1019980026645A KR100310679B1 (en) | 1998-07-02 | 1998-07-02 | Cathode ray tube with electromagnetic wave blocking film and electromagnetic wave blocking film |
| KR1019990002685A KR100319093B1 (en) | 1999-01-28 | 1999-01-28 | Cathode ray tube |
| KR1019990003508A KR100274882B1 (en) | 1999-02-03 | 1999-02-03 | Cathode ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9915628D0 GB9915628D0 (en) | 1999-09-01 |
| GB2338911A true GB2338911A (en) | 2000-01-12 |
Family
ID=27532273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9915628A Withdrawn GB2338911A (en) | 1998-07-02 | 1999-07-02 | Conductive adhesive tape and CRT employing the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP2000036269A (en) |
| DE (1) | DE19930490A1 (en) |
| GB (1) | GB2338911A (en) |
| NL (1) | NL1012493C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2360228A (en) * | 2000-03-14 | 2001-09-19 | 3M Innovative Properties Co | Conductive adhesive tape |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103484032A (en) * | 2013-09-29 | 2014-01-01 | 苏州华周胶带有限公司 | Insulation tape |
| CN103484031A (en) * | 2013-09-29 | 2014-01-01 | 苏州华周胶带有限公司 | Conductive tape |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1169946A (en) * | 1965-09-13 | 1969-11-05 | Minnesota Mining & Mfg | Electrically Conductive Adhesive Tape |
| EP0256756A2 (en) * | 1986-08-05 | 1988-02-24 | Minnesota Mining And Manufacturing Company | Electrically conductive tape |
| EP0276691B1 (en) * | 1987-01-22 | 1991-07-17 | Henkel Kommanditgesellschaft auf Aktien | Adhesive |
| JPH0574372A (en) * | 1991-09-13 | 1993-03-26 | Toshiba Corp | Explosion-proof cathode-ray tube |
| US5246771A (en) * | 1988-04-18 | 1993-09-21 | Teraoka Seisakusho Co., Ltd. | Adhesive tape for preventing implosion and removing electrostatic charge |
| US5676812A (en) * | 1990-03-24 | 1997-10-14 | Canon Kabushiki Kaisha | Electronic equipment with an adhesive member to intercept electromagnetic waves |
-
1999
- 1999-07-01 DE DE19930490A patent/DE19930490A1/en not_active Withdrawn
- 1999-07-02 GB GB9915628A patent/GB2338911A/en not_active Withdrawn
- 1999-07-02 JP JP11188320A patent/JP2000036269A/en active Pending
- 1999-07-02 NL NL1012493A patent/NL1012493C2/en not_active IP Right Cessation
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1169946A (en) * | 1965-09-13 | 1969-11-05 | Minnesota Mining & Mfg | Electrically Conductive Adhesive Tape |
| EP0256756A2 (en) * | 1986-08-05 | 1988-02-24 | Minnesota Mining And Manufacturing Company | Electrically conductive tape |
| EP0276691B1 (en) * | 1987-01-22 | 1991-07-17 | Henkel Kommanditgesellschaft auf Aktien | Adhesive |
| US5246771A (en) * | 1988-04-18 | 1993-09-21 | Teraoka Seisakusho Co., Ltd. | Adhesive tape for preventing implosion and removing electrostatic charge |
| US5676812A (en) * | 1990-03-24 | 1997-10-14 | Canon Kabushiki Kaisha | Electronic equipment with an adhesive member to intercept electromagnetic waves |
| JPH0574372A (en) * | 1991-09-13 | 1993-03-26 | Toshiba Corp | Explosion-proof cathode-ray tube |
Non-Patent Citations (1)
| Title |
|---|
| PAJ Abstract & JP 05 074 372 A * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2360228A (en) * | 2000-03-14 | 2001-09-19 | 3M Innovative Properties Co | Conductive adhesive tape |
Also Published As
| Publication number | Publication date |
|---|---|
| NL1012493A1 (en) | 2000-01-07 |
| DE19930490A1 (en) | 2000-01-05 |
| GB9915628D0 (en) | 1999-09-01 |
| NL1012493C2 (en) | 2000-04-26 |
| JP2000036269A (en) | 2000-02-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |