JPH0243481A - Crime preventing window - Google Patents

Abstract

PURPOSE:To improve economical efficiency by joining a transparent conductive film having slits on a conducting layer to the top of a transparent plate, while providing a conductive tape having a metal face on one side while having an adhesive layer face on the other side on each of both ends of the flow passage of electricity of the conducting layer. CONSTITUTION:A transparent conductive film in which a transparent thin film of a conductive material as a conducting layer 2 is provided on the surface of an organic polymer film while having slits 3 on the conducting layer 2, is joined to the top of a rigid transparent plate 2 of a glass plate, etc. An electrode 4 composed of a conductive tape having an exposed metal face on a first side while having an adhesive layer face in which a metal face which is electrically connected to the first metal face is partly exposed on a second side, is joined to each of both ends of the flow passage of electricity of the conducting layer 2.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a security window, and particularly to a security window using a conductive film.

In recent years, the proportion of glass windows has increased due to improvements in the living environment and the purpose of daylighting, and the number of large-area glass windows has increased due to improvements in aluminum sash technology and glass plate manufacturing technology.

Although this tendency is suitable for the above-mentioned purpose, it poses a very big problem from the perspective of crime prevention.

Various attempts have been made to improve the security performance of such large-area glass windows, but so far nothing has been achieved that is economical and durable.

The inventors of the present invention have conducted extensive research to obtain a window configuration that achieves this objective using transparent conductive films that have been conventionally used in touch panels and to reduce the load on air conditioning and heating. The invention has been achieved.

That is, the present invention has the following features: 1. A transparent conductive film 2 bonded onto a rigid transparent plate unit and having at least a slit in the conductive layer.
; and a metal surface provided at both ends of the electrical flow path of the conductive layer, having an exposed metal surface on a first surface and electrically connected to the metal surface on the other surface (second surface). A security window comprising a conductive tape 3 having an adhesive layer surface with a partially exposed surface, the conductive tape 3 being joined to the conductive layer by the adhesive layer.

2. The security window of item 1, wherein the metal surface exposed on the first surface is discontinuous.

3. The conductive tape is connected to the transparent plate and the transparent conductive film Z
A security window as specified in Paragraph 1 or Paragraph 2 located between the windows.

and 4, the security window of item 1 or item 2, in which the conductive tape is on the opposite side of the transparent plate of the transparent conductive film 2.

The rigid transparent plate in the present invention may be made of any inorganic or organic material as long as it is a transparent plate constituting a transparent window, but a glass plate, which is a common window material, is most suitable.

Next, the transparent conductive film 2 is made of a film-like substrate, for example, an organic polymer film such as a polyester film, with a transparent thin film (conductive layer) made of a conductive material provided on the surface. At least the conductive layer has a slit. In the present invention, the transparent conductive film 2 may be bonded to the transparent plate 1 on both the film substrate side and the conductive layer side, and the conductive layer on the film substrate may be bonded to the transparent plate 1 as described above. Insulating sulins 1- are provided. Many materials and methods have been proposed for the conductive layer, such as metal films, metal oxide films, or (metal films and metal oxide films). ``Thin Film Handbook'' edited by the Association, December 10, 1980, page 494 for Ohm Publishing Transferred to: ``Nikkei Elec 1-191-Ronics 1978 1
0-30, Nikkei McGraw-Hill.

October 30, 1978, and other known techniques are exemplified.

Among these, those in which a thin film of indium/tin oxide or silver/gold is provided by a physical paper deposition (PVD) method are preferred from the viewpoint of color tone and durability.

A protective layer or a protective film may be provided on the conductive layer to protect the abrasion resistance and environmental resistance of the conductive layer.

Examples of the protective layer include organic polymer layers such as acrylic resins, urethane resins, epoxy resins, acrylic resins, and S! Oz, T! Oz, TiN, Ti
Examples include a coating layer made of a non-conductive material such as C or the like.

As the protective film, a thermoplastic resin film is generally employed, and examples include films of polyester resin such as polyethylene terephthalate, polyolefin resin such as polypropylene, polyamide resin, and polyacrylic vinyl resin. These films may have their surfaces coated with the protective layer listed above.

Among these, water-permeable materials are preferred in order to prevent moisture from entering. Further, these films may have a conventionally known heat ray anti-tA function. These may also be subjected to anti-glare treatment.

In the present invention, electrodes are provided at both ends of the electrical flow path in the conductive layer.

This electrode is formed by a conductive tape having an exposed metal surface on a first surface and an electrically connected metal surface on the other surface (second surface). It has an adhesive (including adhesive) layer surface with a part of the metal surface exposed.

Such conductive tapes include embossed metal foil and adhesive placed in the recesses, such as Scotch conductive tape 1245 and 1267 manufactured by 3M Company, and anisotropic conductive tapes coated with adhesive (such as those manufactured by Fuji Electric Co., Ltd.). Manufactured by Kobunshi Kogyo■, Fujipoly■
connector) is exemplified. These are the adhesives on the second side (
It is bonded to the conductive layer of the transparent conductive film 2 by an adhesive (conductive metal powder may be mixed in the adhesive), but at that time, the exposed metal surface makes an electrical connection with the conductive layer. is protected. On the other hand, the metal surface exposed on the first surface serves as a connection end to other electrical equipment.

A weak current is passed between these electrodes in order to detect when at least a portion of the transparent plate 1 is damaged and the conductive layer of the transparent conductive film bonded thereto is broken. There is. Since this current is used for the purpose of detecting breakage, there is no need to actively raise the temperature of the transparent plate itself, and therefore an extremely weak value may be sufficient. For example, 100mA
It is as follows.

A detector is connected to this electric circuit for detecting a change in resistance or a change in current caused by the rupture.

The security window of the present invention is preferably protected by providing a sealant on the end face in order to prevent disturbance of the electrical circuit due to infiltration of water removed during cleaning or the like.

The security window of the present invention is in principle a transparent window.

Here, transparent includes not only a state in which transparency is extremely good, but also a state in which transparency is reduced, and a state in which there is no transparency but in which light can be let in. These may be colorless or even colored.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a transparent conductive film pasted on a transparent plate and slits and electrodes attached thereto. FIG. 2 shows an example in which a large number of electrodes are attached. FIG. 3 is a sectional view of a portion where the electrodes are attached, and is an example in which the transparent conductive film is located on the transparent plate side. FIG. 4 is an example in which the transparent conductive film is located on the transparent plate side of the substrate film, and shows two types of slit examples. FIG. 5 shows an example of embossed discontinuous metal foil. FIG. 6 shows an example using an anisotropically conductive material. 1...Glass, 2...Transparent conductive layer, 3.31...
Slit, 4... Electrode, 5... 8 layers, 6... Adhesive layer, 7... Base material for transparent conductive film, 11... Metal foil, 12... Contact point. 13... Anisotropic conductive material F1 base material, 14... Anisotropic conductive material conductive metal piece, 20... Sensor

Claims (1)

[Claims] 1. A rigid transparent plate ¥1; a transparent conductive film bonded thereon and having at least a slit in the conductive layer; and both ends of the electrical flow path of the conductive layer; The adhesive layer has an exposed metal surface on a first surface and a metal surface electrically connected to the metal surface is partially exposed on the other surface (second surface). A security window comprising: a conductive tape, the conductive tape being bonded to the conductive layer by the adhesive layer. 2. The security window according to claim 1, wherein the metal surface exposed on the first surface is discontinuous. 3. The security window according to claim 1 or 2, wherein the conductive tape is located between the transparent plate and the transparent conductive film. 4. The security window according to claim 1 or 2, wherein the conductive tape is on the opposite side of the transparent plate of the transparent conductive film.