JP2002270117A - Display with functional film, and display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cathode-ray tube with a functional film allowing further positive ground connection of a conductive layer of the functional film. SOLUTION: In the cathode-ray tube 2 with the functional film, a conductive electrode 31 is directly formed on a screen 11 of the cathode-ray tube 10. In a highly functional film 20, a conductive layer 22 is arranged to hold a part of the conductive electrode 31 together with the screen 11 of the cathode-ray tube 10. Moreover, the conductive layer 22 and the conductive electrode are in direct contact. A conductive tape 32 led to the ground is electrically connected to the conductive electrode 31, and the conductive layer 22 of the highly functional film 20 is grounded through the conductive electrode 31 and the conductive tape 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display with a functional film and a display device having the same, and more particularly to a technique for reliably connecting a conductive layer of the functional film to ground.

[0002]

2. Description of the Related Art FIG. 4 is a schematic sectional view of a conventional cathode ray tube 2P with a functional film. In a conventional cathode ray tube 2P with a functional film, a high-performance film 20P is attached on a display surface (also called a face surface) 11P of the cathode ray tube 10P. The high-performance film 10P has a display surface 11
An adhesive layer 21P for attaching and fixing to P, a hard coat layer 24P, a conductive high refractive layer 25P made of titanium nitride (TiN) or the like, and a low refractive layer 2 made of SiO ₂ or the like.
6P and an antifouling layer 27P made of a fluorine-based resin or the like have a multilayer structure laminated in this order.

A low-reflection film is formed by the high-refractive layer 25P and the low-refractive layer 26P, so that reflection of external light on the display surface 11P is suppressed. In addition, the antifouling layer 27P is provided to prevent dirt from being adhered or to be easily peeled off even if dirt is attached (that is, for antifouling). The adhesive layer 21P and the hard coat layer 24
In some cases, a base film made of PET (polyethylene terephthalate) or the like is inserted between P and P.

In a conventional cathode ray tube 2P with a functional film, an antifouling layer 27P, which is the uppermost layer of the high-performance film 20P,
A conductive electrode 31P made of, for example, lead solder or the like is formed directly on the upper side. The conductive electrode 31P is connected to ground via a conductive tape 32P made of copper or the like, whereby the conductive high refractive layer 25P is grounded via the conductive electrode 31P and the conductive tape 32P.

Although the conductive electrode 31P and the conductive high refractive layer 25P are not in direct contact with each other, they are actually conductive. The reason is not clear, but the antifouling layer 27P
Since the thickness of the low-refractive layer 26P is very thin, on the order of nanometers, it is considered that conduction is achieved by a tunnel effect or the like.

[0006] By grounding the conductive high refractive layer 25P, it is possible to shield an alternating electric field generated from a driving device (not shown) of the cathode ray tube 10P,
Charging of the display surface 11P can be prevented.

[0007]

As described above, in the conventional cathode ray tube 2P with a functional film, the conductive electrode 31P is directly formed on the antifouling layer 27P of the high-performance film 20P by using lead solder or the like. . However, since the antifouling layer 27P is provided as a measure against the adhesion of dirt, the antifouling layer 27P is provided.
There is a problem that it is difficult to form the conductive electrode 31P on P, or even if it can be formed, the bonding strength is weak.

The present invention has been made in view of the above, and it is a first object of the present invention to provide a display with a functional film that can more reliably connect the conductive layer of the functional film to ground.

It is a second object of the present invention to provide a display device capable of more reliably achieving an antistatic function and an electromagnetic wave shielding function by a functional film by realizing the first object.

[0010]

A display with a functional film according to claim 1, comprising a display having a display surface, a conductor disposed on the display surface, and a conductive layer. A functional film disposed on the display surface such that a layer sandwiches a portion of the conductor with the display surface.

A display with a functional film according to a second aspect is the display with a functional film according to the first aspect, wherein the conductive layer of the functional film is in contact with the conductor.

A display with a functional film according to a third aspect is the display with a functional film according to the first or second aspect, wherein the display surface is made of glass, and the conductor is made of solder for glass.

A display with a functional film according to a fourth aspect is the display with a functional film according to the first or second aspect, wherein the conductor is made of a conductive tape.

A display device according to a fifth aspect includes the display with a functional film according to any one of the first to fourth aspects, and a driving device for driving the display, wherein the conductor is grounded.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS <First Embodiment> FIG. 1 is a schematic view (side view) of a display device 1 according to a first embodiment, and FIG.
FIG. 1 shows a schematic cross-sectional view of a part of a cathode ray tube with a functional film (or a display with a functional film) 2. As shown in FIG. 1, the display device 1 includes a cathode ray tube 2 with a functional film, a driving device 3, and a housing 4.

The cathode ray tube 2 with a functional film includes a cathode ray tube (or display) 10, a high-performance film 20 attached to a display surface (also called a face surface) 11 of the cathode ray tube 10, a conductive electrode (or a conductor). ) 31
(See FIG. 2), a conductive tape 32 made of, for example, copper,
A deflection yoke 13.

The cathode ray tube 10 has an envelope formed of a glass panel and a funnel (therefore, the display surface 11 is made of glass), and an electron gun 12 is provided inside the end of the neck portion of the cathode ray tube 10. Are located. The deflection yoke 13 is mounted outside the neck of the cathode ray tube 10. Then, the driving device 3 drives the cathode ray tube 10 by controlling the electron gun 12 and the deflection yoke 13.

The cathode ray tube 2 with a functional film and the driving device 3 are housed in a housing 4. At this time, the cathode ray tube 2 with a functional film is arranged such that the high-performance film 20 is exposed from the housing 4. . Further, the conductive layer 22 (see FIG. 2) of the high-performance film 20 is grounded (grounded) via the conductive tape 32. Although FIG. 1 illustrates a case where the display surface 11 is a flat type, the display surface 11 may be a curved surface type.

As shown in FIG.
Is an adhesive layer 21 for sticking and fixing to the display surface 11.
A light-transmitting conductive layer 22, a base film 23 made of, for example, PET (polyethylene terephthalate) or the like,
A hard coat layer 24, a high refractive layer 25 made of, for example, titanium nitride (TiN), a low refractive layer 26 made of, for example, SiO _2, and an antifouling layer 2 made of, for example, a fluorine resin.
7 have a multilayer structure laminated in this order. The conductive layer 22 is made of, for example, TiN or ITO. The high-performance film 20 may have a structure without the base film 23. Then, the high-performance film 20 has the adhesive layer 2
1 is attached to the display surface 11.

Note that a low-reflection film is formed by the high-refractive layer 25 and the low-refractive layer 26, whereby reflection of external light on the display surface 11 is suppressed. The antifouling layer 27
Is to make it difficult to adhere dirt or to easily peel off even if dirt is attached (measure against adhesion of dirt or antifouling function).

In particular, in the cathode ray tube 2 with a functional film,
The conduction electrode 31 is provided directly on the display surface 11 of the cathode ray tube 10. The conductive electrode 31 is made of, for example, lead solder for glass / ceramic containing a small amount of zinc (Zn) or titanium (Ti) (or solder for glass), and the solder is applied to the glass display surface 11 using an ultrasonic soldering iron. It is formed by attaching. The conductive electrode 31 is connected to the display surface 1.
One or a plurality thereof is provided in one portion other than the screen region for displaying an image.

Further, in the cathode ray tube 2 with a functional film,
The high-performance film 20 has a conductive layer 22 formed on the conductive electrode 3.
1 and is arranged so that the conductive layer 22 is in contact with the conductive electrode 31. In other words, the part of the conductive electrode 31 is sandwiched between the display surface 11 of the cathode ray tube 10 and the conductive layer 22 of the high-performance film 20. In addition,
The adhesive layer 21 is not provided at a portion where the conductive layer 22 and the conductive electrode 31 of the high-performance film 20 are in contact.

A conductive tape 32 that is connected to the ground is electrically connected to the conductive electrode 31, whereby the conductive layer 22 of the high-performance film 20 is grounded via the conductive electrode 31 and the conductive tape 32. . In view of such a form, the conductive electrode 31 and the conductive tape 32 can be collectively referred to as a “conductor”.

As described above, the cathode ray tube 2 with a functional film
In this embodiment, the conductive electrode 31 is formed on the display surface 11 of the cathode ray tube 10 and the conductive layer 2 of the high-performance film 20 is formed.
The high-performance film 20 is disposed such that the second electrode 2 and a display surface 11 of the cathode ray tube 10 sandwich a part of the conductive electrode 31. For this reason, the conventional cathode ray tube 2P with a functional film
The conductive electrodes 31 can be arranged more firmly than when the conductive electrodes 31P are formed on the antifouling layer 27P that is the uppermost layer of the high-performance film 20P as shown in FIG. Thereby, the ground connection of the conductive layer 22 of the high-performance film 20 via the conductive electrode 31 can be performed more reliably.

Moreover, in the cathode ray tube 2 with a functional film, the conductive layer 22 of the high-functional film 20 and the conductive electrode 31 are in direct contact. On the other hand, in the conventional cathode ray tube 2P with a functional film (see FIG. 4), an insulating layer (specifically, a low refractive layer 26P and an antifouling layer) is provided between the conductive high refractive layer 25P and the conductive electrode 31P. 27P) intervenes. Therefore, the cathode ray tube 2 with a functional film can enhance the conductivity between the conductive layer 22 of the high-performance film 20 and the conductive electrode 31 (reduce the contact resistance), and can obtain stable conductivity ( It should be noted that even if an insulating layer is interposed between the conductive layer 22 and the conductive electrode 31 in the cathode ray tube 2 with a functional film, electrical continuity between the two can be achieved as in the related art. Thereby, the ground connection of the conductive layer 22 of the high-performance film 20 via the conductive electrode 31 can be further ensured.

At this time, since the conductive electrode 31 is formed by attaching lead solder for glass / ceramic to the glass display surface 11 using an ultrasonic soldering iron as described above, the conductive electrode 31 can be easily formed. And firmly arranged on the display surface 11.

As described above, the cathode ray tube 2 with a functional film
According to this, the conductive layer 22 of the high-performance film 20 can be reliably grounded via the conductive electrode 31 and the conductive tape 32. As a result, in the display device 1, the conductive layer 22 of the high-functional film 20 can more reliably and stably prevent the high-functional film 20 (in other words, the display surface 11) from being charged. Further, the alternating electric field or electromagnetic wave generated from the driving device 3 and radiated toward the display surface 11 can be reliably and stably shielded by the conductive layer 22 of the high-performance film 20.

<Second Embodiment> FIG. 3 is a schematic cross-sectional view of a part of a cathode ray tube 2B with a functional film according to a second embodiment. In the following description, the same components as those described above are denoted by the same reference numerals, and the description thereof will be omitted.

As shown in FIG. 3, in the cathode ray tube 2B with a functional film, the conducting electrode 31 of the cathode ray tube 2 with a functional film in FIG. 2 is not provided, and one end of a conducting tape (or a conductor) 32B is provided. Is directly attached on the display surface 11. One end of the conductive tape 32B is provided at one or a plurality of places on the display surface 11 other than the above-described screen area.

In the cathode ray tube 2B with a functional film, the conductive film 22 of the high-functional film 20 covers a part of the display surface 11 of the conductive tape 32B, and the conductive layer 22 is connected to the conductive tape 32B. It is arranged in contact with the part. In other words, the part of the conductive tape 32B is sandwiched between the display surface 11 of the cathode ray tube 10 and the conductive layer 22 of the high-performance film 20. Other configurations of the cathode ray tube 2B with a functional film are the same as those of the cathode ray tube 2 with a functional film in FIG. 1 and FIG.

The cathode ray tube 2B with a functional film can be applied to the display device 1 instead of the cathode ray tube 2 with a functional film in FIG. At this time, the other end of the conductive tape 32B is connected to the ground, whereby the conductive layer 22 of the high-performance film 20 is grounded via the conductive tape 32B.

According to the cathode ray tube 2B with a functional film,
The same effects as those of the cathode ray tube 2 with a functional film described above (see FIG. 2) are obtained, and the following effects are obtained. That is,
In the cathode ray tube 2 with a functional film described above, the conductive tape 32 is used.
Is the conductive layer 2 of the high-performance film 20 via the conductive electrode 31
2 is electrically connected to the conductive layer 22 of the high-performance film 20 in the cathode ray tube 2B with a functional film.
And the ground can be seamlessly connected by the conductive tape 32B. Therefore, according to the cathode ray tube 2B with the functional film and the display device provided with the same, the connection between the conductive layer 22 and the ground can be more reliably performed, so that the reliability of the ground connection can be further improved.

The cathode ray tubes 2 and 2B with a functional film
Instead of the cathode ray tube 10, a display with a functional film may be configured using another display such as a field emission display (FED) or a plasma display panel (PDP).

[0034]

According to the first aspect of the present invention, the conductor is disposed on the display surface of the display, and the conductive layer of the functional film sandwiches a part of the conductor together with the display surface of the display. A functional film is arranged. For this reason, the conductor can be disposed more firmly than when the conductor is disposed on the antifouling layer that is the uppermost layer of the functional film as in a conventional display with a functional film. As a result, the ground connection of the conductive layer of the functional film via the conductor can be performed more reliably.

According to the second aspect of the present invention, the conductivity between the conductive layer and the conductor can be further improved as compared with the case where an insulating layer is interposed between the conductive layer and the conductor of the functional film. And more stable conductivity can be obtained. As a result, the ground connection of the conductive layer of the functional film via the conductor can be performed more reliably.

According to the third aspect of the invention, the conductor can be easily and firmly arranged.

According to the fourth aspect of the present invention, it is possible to arrange one end of the conductive tape on the display surface and connect the other end to the ground. That is, it is possible to seamlessly connect the conductive layer of the functional film and the ground. Therefore, the connection between the conductive layer and the ground can be made more reliable, and the reliability of the ground connection can be improved.

According to the fifth aspect of the present invention, since the conductive layer of the functional film is more reliably grounded, the conductive layer of the functional film allows the function film (in other words, the display surface) to have an antistatic function or drive. The shield function of the electromagnetic wave generated from the device can be obtained more reliably.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of a display device according to Embodiment 1.

FIG. 2 is a schematic sectional view of a cathode ray tube with a functional film according to the first embodiment.

FIG. 3 is a schematic sectional view of a cathode ray tube with a functional film according to a second embodiment.

FIG. 4 is a schematic sectional view of a conventional cathode ray tube with a functional film.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 display device, 2, 2B cathode ray tube with functional film (display with functional film)
0 cathode ray tube (display), 11 display surface, 20
High-performance film, 22 conductive layer, 31 conductive electrode (conductor), 32, 32B conductive tape (conductor).

Claims (5)

[Claims] 1. A display having a display surface, a conductor disposed on the display surface, and a conductive layer, wherein the conductive layer and the display surface sandwich a part of the conductor. A display with a functional film, comprising: a functional film disposed on the display surface. 2. The display with a functional film according to claim 1, wherein the conductive layer of the functional film is in contact with the conductor. 3. The display with a functional film according to claim 1, wherein the display surface is made of glass, and the conductor is made of solder for glass. 4. The display with a functional film according to claim 1, wherein the conductor is made of a conductive tape. 5. A display device, comprising: the display with a functional film according to claim 1; and a driving device for driving the display, wherein the conductor is grounded.