KR20100024135A - Glass filter for a plasma displasy device and method for manufacturing the same - Google Patents

Abstract

PURPOSE: A glass filter for a plasma display device and method for manufacturing the same are provided to reduce manufacturing costs by optimizing a function of a glass filter. CONSTITUTION: A glass substrate(1) is separated from the PDP(Plasma Display Panel) in forward direction of the PDP. A functional film layer(3) has a black frame layer defining an effective screen one side. An adhesive layer(5) bonds the glass substrate and the functional film layer. An electromagnetic wave shielding layer secludes electromagnetic wave created in the PDP.

Description

Glass filter of plasma display device and manufacturing method of the glass filter {GLASS FILTER FOR A PLASMA DISPLASY DEVICE AND METHOD FOR MANUFACTURING THE SAME}

The present invention relates to a glass filter of a plasma display device and a method of manufacturing the glass filter.

In the plasma display panel, a plurality of cells are provided by a plurality of partition walls formed between a glass front panel and a rear panel, and in each cell, helium-xenon (He-Xe), helium-neon (He-Ne) Inert gas, such as this, is injected. When the discharge phenomenon occurs due to the high frequency voltage in the cell, vacuum ultraviolet rays are generated to operate the light emitting phosphor provided between the partition walls.

The plasma display device includes a case, a plasma display panel (hereinafter referred to as a PDP), a driving circuit including a PCB for controlling the driving of the PDP, and a plasma display device connected to the driving circuit board to drive the plasma display device. A heat sink for dissipating generated heat and a filter formed on the front surface of the PDP are included.

The filter has a color correction function for correcting a decrease in color purity caused by a problem in the operation of the PDP, a function for blocking near-infrared rays causing malfunctions of a remote control device, and the like. It acts as a shield for electromagnetic waves causing malfunction problems. In addition, in order to solve the problem that the viewer feels due to the reflection of the external light, the external light reflection prevention function and the function of setting the black frame defining the effective screen are performed.

As the filter, there is a glass filter method using a plurality of films stacked on the glass to perform each function, and a film method using a plurality of films themselves stacked on the front panel of the PDP. The film method is a problem that can cause failure in the PDP, which is expensive at the time of handling due to a process problem to be laminated to the PDP itself, a problem of low functional efficiency required due to the problem of using only a thin film, efficiently There is a problem that cannot be grounded. On the other hand, the glass filter method is a method of using glass separately, which increases the manufacturing cost compared to the film method, but since the gap is formed between the PDP, the necessary function of the filter is fully realized, and the expensive PDP film is left as it is. Since it can be implemented, there is an advantage that can reduce the failure rate of the display device.

The present invention is directed to a glass filter under the background described above.

As mentioned, the glass filters are expensive, accounting for approximately 30% of the cost of excluding PDP from the overall manufacturing cost of the plasma display device. In view of such a problem, what kind of method can be applied and whether the desired effect can be realized while reducing such a manufacturing cost is the main background pursued by the present invention. This aspect of cost will be more problematic when the competition between the plasma display device and the liquid crystal display device intensifies.

As the prior art of the glass filter, there is a prior art disclosed in Korean Patent Laid-Open Publication No. 10-2005-0106622 (Citation Document 1) which forms a black frame on its own glass to define an effective screen. However, as the glass filter of the prior art of the reference 1, a black frame is formed on the glass, and separate filters are required to perform the electromagnetic shielding function, color correction function, and near-infrared cutoff function. This is a necessary problem. On the other hand, as a content of the cited reference 1 as a film method different from the glass filter method has been proposed to attach a film type on the electromagnetic shielding film, this is a film method is a complex manufacturing method, in addition to a plurality of films must be laminated Therefore, there are many disadvantages in manufacturing process and cost. In addition, as another content of Reference Document 1, there is a film method but a method using an electromagnetic wave shielding layer, which is a combination of the electromagnetic wave shielding layer and the color die layer, which is difficult to control the process, and a complicated process and a factor of the cost increase. This happens similarly. Of course, it still has the problem that the film system has.

In addition, there is a technique proposed in Korean Patent Laid-Open Publication No. 10-2005-0051844 (Citation Document 2). This technique has proposed a technique in which the film acts as a black frame by providing a film with a photosensitive material and irradiating the film with ultraviolet rays or the like. However, such a technique is a factor of the increase in cost because a photosensitive process must be added separately, the process and the cost is further increased because all the other films must be laminated sequentially.

The present invention is proposed under the background described above, and proposes a glass filter in which the production of a black frame is performed efficiently, and together with each necessary function of the glass filter is realized by an optimal functional layer. Accordingly, the present invention proposes a glass filter of a plasma display device and a method of manufacturing the glass filter, in which the cost of the glass filter is reduced, the glass of the process, and the defective rate are reduced.

The glass filter of the present invention, the glass substrate spaced apart from the front in the PDP; A functional film layer having at least one black frame layer defining an effective screen; An adhesive layer for adhering the glass substrate and the functional film layer; And an electromagnetic shielding layer for blocking electromagnetic waves generated from the PDP.

The electromagnetic shielding layer is provided on the rearmost layer of the glass filter, and the electromagnetic shielding layer is heated after the raw material forming the electromagnetic shielding layer is printed on the outer surface of the glass substrate, and then the shielding raw material is fired and the glass substrate is reinforced. do. Here, the printing method of the electromagnetic shielding layer is an offset printing method.

The functional film layer is a cured film layer, the coating layer is directed to the front.

The pressure-sensitive adhesive layer includes a color correction dye and a near infrared ray blocking dye.

The black frame layer is exposed toward the pressure-sensitive adhesive layer and takes a printing manner, and specifically, organic printing is performed by a screen printing printing method or a gravure printing method.

According to the method of manufacturing a glass filter of the present invention, an electromagnetic wave shielding layer is formed on an outer surface of a glass substrate to provide a substrate side component, and a black frame layer defining an effective screen is formed on the outer surface of the functional film layer. To provide; The said board | substrate side component and the said functional film side component are manufactured combining each other.

The electromagnetic wave shielding layer is formed after the shielding material is offset printed on the outer surface of the glass substrate and then fired.

The edge of the glass substrate is further subjected to chamfering.

The substrate side component and the functional film side component are fastened by an adhesive, and the adhesive contains at least a binder, a color correction dye, and a near infrared ray blocking dye.

The black frame layer is formed by an organic printing method, and the organic printing method is a screen printer method or a gravure printing method.

The functional film layer is a cured film, and the black frame layer is formed on the film side of the cured film.

According to the present invention, even if the function of the glass filter is optimally implemented, the cost can be drastically reduced, and the overall defect rate of the plasma display apparatus can be reduced.

More specifically, since the glass film may be provided only with the functional film layer, the substrate, and the adhesive, the process may be simplified and many advantages may be obtained in terms of manufacturing cost. In addition, since the electromagnetic shielding layer is provided on the bottom-most inner side of the glass filter, a process such as grounding can be conveniently performed in the future, and even if the glass filter directly protects the front edge part of the display device without the front frame, the grounding lamp The process of can be conveniently performed. In addition, since the black frame layer is simply and conveniently performed by the process of printing on the lower surface of the functional film layer, it is possible to expect advantages in terms of manufacturing cost and manufacturing process.

Hereinafter, with reference to the drawings will be described in detail a specific embodiment of the present invention.

<First Embodiment>

1 is a cross-sectional view of a glass filter of the plasma display device of the first embodiment.

Referring to FIG. 1, when the glass filter is based on the substrate 1, an electromagnetic shielding layer 2 and a rear protective film 9 are disposed below the glass filter. The pressure-sensitive adhesive layer 5, the black frame layer 4, the functional film layer 3, and the front protective film 8 are placed on the upper side in order. The black frame layer 4 is attached to the pressure-sensitive adhesive layer 5 in a state of being laminated on the lower side of the functional film layer 3 by printing or the like. In the front protective film 8, the front surface refers to the user side, that is, the outer side of the plasma display device, and in the rear protective film 9, the back surface refers to the inner side of the plasma display device.

The material of each layer mentioned above, the relationship between each layer, etc. are demonstrated in more detail.

Electromagnetic shielding layer

The electromagnetic shielding layer is formed on the rear surface of the substrate 1 made of glass having high light transmittance, and serves to shield electromagnetic waves generated from the PDP without leaking to the outside.

The electromagnetic shielding layer is formed by patterning a metal having a relatively low resistance such as silver, gold, platinum, copper, and the like, preferably silver, in a mesh form or patterning in a stripe type. Each line constituting the patterned electromagnetic shielding film has a line width of 10 to 30 micrometers, which is preferable for the electromagnetic shielding effect and the light transmittance. In addition, each line is spaced several tens to hundreds of micrometers apart.

As a method of patterning the electromagnetic wave shielding layer, an offset device may be applied for process convenience and material cost reduction.

The offset device is roughly divided into a transition part, a conveyor, and a transfer part.

In the transition portion, grooves are formed at intervals and depths corresponding to the pattern of the electromagnetic shielding layer, and a transition roll made of a metal / rubber / synthetic resin is provided as a main configuration. And, one side of the transition roll, a nozzle for injecting the shielding material constituting the electromagnetic wave shielding layer into the groove, and a blade for planarizing the injected autism raw material in the transition roll. With this configuration, the shielding material is injected into the outer surface of the rotating transition roll through the nozzle, and then the shielding material is flatly injected into the groove by using the blade.

Thereafter, at least one portion of the transition roll has a portion that is in pressure contact with the conveyor such that the pattern of the shielding raw material is transferred to the conveyor at the contact portion.

Thereafter, the conveyor moves to a transfer part, and at least a portion of the conveyor has a part in pressure contact with the substrate 1 in the transfer part, whereby the pattern of the shielding material is transferred to the substrate.

On the other hand, the shielding material is a state in which a solvent is contained in the metal material-preferably silver-etc. which make up the electromagnetic wave shielding layer, and has some fluidity. Such a fluid shielding material falls into the groove of the transition roll, is transferred to a conveyor and turned off, and then the shielding material comes into contact with air to become viscous. Then, the substrate 1 is brought into contact with the substrate 1 to be transferred and [set].

After the shielding raw material is transferred to the substrate 1 by the offset device, the solvent is removed while the solvent is removed at a high temperature while the electromagnetic shielding layer is cured. According to the process mentioned above, the electromagnetic wave shielding layer which has a predetermined | prescribed pattern as one body is formed in the back surface of the board | substrate 1. As shown in FIG.

On the other hand, in the firing process it can be expected that the glass constituting the substrate 1 is enhanced. That is, in a single litigation process, the glass reinforcing process and the firing process of the electromagnetic wave shielding layer may be performed together.

Adhesive layer

The pressure-sensitive adhesive layer 5 is a pressure sensitive adhesive (PSA) that exhibits adhesive force in response to pressure. As the adhesive raw material of the pressure-sensitive adhesive layer 5, an acrylic pressure-sensitive adhesive having excellent adhesive strength and durability is used as a binder, a color correction dye which performs color correction function, and a near infrared ray blocking dye which blocks near infrared rays, and a solvent is used. Used. A crosslinking agent and a coupling agent may be further used together with the binder.

The acrylic pressure-sensitive adhesive used as the binder is 75 to 99.89% by weight of a (meth) acrylic acid ester monomer having an alkyl group having 1 to 12 carbon atoms, and 0.1 to 20% by weight of an α, β unsaturated carboxylic acid monomer which is a functional monomer, or a hydroxyl group. 0.01 to 5% by weight of the polymerizable monomer having a single or mixed can be obtained by copolymerization. As the color correction dye, at least one of porphyrin dye and cyanine dye may be used. As the near-infrared blocking dye, at least one of diionium-based dyes, phthalocyanine-based dyes and naphthalocyanine-based dyes may be used.

The pressure-sensitive adhesive layer 5 is provided with a color correction dye and a near infrared ray blocking dye, so that the color correction function and the near infrared ray blocking function are performed together by a single layer.

Here, preferably, the weight ratio between the binder and the dye has a range of 10: 1 to 10000: 1, but this may vary depending on the transmittance, the extinction coefficient, the final viscosity of the pressure-sensitive adhesive, the color correction and the degree of near-infrared cutoff.

The pressure-sensitive adhesive layer 5 is interposed between the front surface of the substrate 1 and the functional film layer 3 so that the substrate 1 and the functional film layer 3 adhere to each other, and included in the adhesive raw material. The color correction function and the near infrared ray blocking dye may allow the function of color correction to be performed by the near infrared ray blocking function.

Functional film layer

The functional film layer is a hard film layer (HardCoat film), a method of further providing a hard coat layer on the plastic film-preferably PET.

It presents in more detail with respect to the method for providing the cured coating layer.

On a layer of poly ethylene terephthalate (PET), coating is carried out with a coating solution by a sol-gel method, preferably a spin coating method, followed by drying.

Here, as the coating liquid, hydrogen bonds between organic and inorganic substances are used, and poly (2-methyl-2-oxazoline) and poly (N-vinylpyrrolidone) ( a mixture of poly ((N-vinylpyrrolidone)) and polyethylene glycol homogeneously contained molecularly in silica gel, a mixture of SiO ₂ and C ₆ H ₅ SiO _3/2 and polyethylene glycol, tetraoxysilane (TEOS: tetrathoxysilane) and phenyl A mixture of triethoxysilane (PhTEOS: phenyltriethoxysilane), C ₂ H ₅ OH, H ₂ O and HCl may be used.

The cured film layer produced by the above-described method has a high bond strength between the coating layer and the film layer, high flexibility, high strength to withstand external physical stimuli, and higher light transmittance than PET's own light transmittance. Can be. Here, the cured film layer becomes higher than PET's own light transmittance because the coating layer has a low light reflection coefficient, and such a low reflection coefficient is because the coating layer is mainly composed of silica. Therefore, the cured film layer can significantly lower the manufacturing cost compared to the AR film produced by the deposition method as a conventional anti-reflection layer. However, in the case of the present invention, the AR film and the AG film are not excluded from the idea, but when the cured film layer is used, it can be expected that the reduction of the manufacturing cost of the glass filter becomes larger.

In the drawing, the upper and lower sides of the functional film layer 3 divided by a dotted line distinguish the film layer and the coating layer.

Black frame layer

The black frame is a portion that processes the edge portion of the plasma display apparatus corresponding to the portion other than the effective screen as black.

The black frame layer 4 is printed on the back of the functional film layer 3 and manufactured. Here, the screen printing method or the gravure printing method may be used as the printing method. As described above, the cost of manufacturing the black frame layer is drastically reduced by applying a paint in which a black pigment or dye is added to the rear surface of the functional film layer. However, the printing method may not be particularly limited to the above-described method.

For example, the cost and time required for the firing process can be reduced as compared with the case in which the glass is directly formed on the glass, such as the technique described in Reference Document 1, and the risk of contamination of the glass can be reduced. Compared with other techniques of Ref. 1, there is a great advantage in that it can be formed in glass by a simple process. Compared with the case of using the film of the photosensitive material as in Reference 2, the cost can be considerably reduced when the photosensitive film is not required. In addition, there is an advantage that the convenience of the operation and the effect of reducing the process is increased as compared to having to perform a special coating operation to form it in the adhesive.

Protective film layer

The protective film layers 8 and 9 are intended to resist contamination or impact that may occur in a glass filter manufacturing process, a transportation process, or a plasma display apparatus manufacturing process, and may be easily removed in a final process. Polypropylene or polyethylene thin films may be used.

Since the protective film layer does not affect the practical function of the glass filter, it may be excluded from the component of the glass filter unless otherwise specified.

The operation of the glag filter according to the first embodiment will be described.

Electromagnetic waves generated in the PDP are shielded by the electromagnetic shielding layer 2 and removed through the ground of the plasma display apparatus. The color correction function and the near infrared ray blocking function are achieved by the pressure-sensitive adhesive layer 5. External light reflection prevention function is performed by the functional film layer (3). The effective screen of the plasma display apparatus may be defined by the black frame layer 4.

According to the glass filter of this embodiment, since the glass film can be provided only with the functional film layer, the substrate, and the adhesive, the process can be simplified and many advantages can be obtained in terms of manufacturing cost. In addition, since the electromagnetic shielding layer is provided on the bottom-most inner side of the glass filter, a process such as grounding can be conveniently performed in the future, and even if the glass filter directly protects the front edge part of the display device without the front frame, the grounding lamp The process of can be conveniently performed. In addition, since the black frame layer is simply and conveniently performed by the process of printing on the lower surface of the functional film layer, it is possible to expect advantages in terms of manufacturing cost and manufacturing process.

2 is a flowchart illustrating a glass filter manufacturing method according to the first embodiment.

Referring to FIG. 2, according to the method of manufacturing a glass filter of the present invention, both the substrate 1 side component and the functional film layer 3 side component proceed with independent manufacturing processes.

First, the substrate 1 is cut after the large glass (S1), chamfer the edge of the cut disc (S2). The chamfering step (S2) is to prevent the edge portion from interfering with viewing of the display device when the glass filter provides the front edge portion of the plasma display device without the front frame. Therefore, after the chamfering step (S2) is in progress, the edge portion of the substrate 1 becomes a glossy or semi-gloss surface.

After that, the pattern is printed using the shielding material constituting the electromagnetic shielding layer (2) (S3). As for the pattern printing, offset printing can be used as described above. After the pattern is printed, it is heated in a heating furnace (S4), the firing process is performed on the shielding material forming the electromagnetic shielding layer, and the reinforcement process is performed on the substrate 1 together. Since the calcination process of the shielding material and the reinforcement process of the substrate can be performed together, the effect of shortening the process and reducing the material cost becomes greater.

In the above-described manufacturing process of the component on the substrate 1 side, when the substrate 1 does not form an edge portion in the plasma display apparatus, the chamfering process S2 may be removed.

In the manufacturing process of the said component of the functional film layer 3 side, the front protective film 8 is affixed on the functional film layer 3 (S11). Thereafter, the paint providing the black frame layer 4 is printed (S12), and the drying process of the printed paint (S13) is performed.

In this case, the attaching process of the front protective film 8 may be performed after the black frame printing process (S12) or the drying process (S13), but is performed before the paint forming the black frame is printed to protect the film. desirable.

Through the individual processes described above, the functional film layer side component and the substrate side component are transported to the field for manufacturing the glass filter. At the glass filter manufacturing site, the functional film layer side components are laminated on the substrate side components with the pressure sensitive adhesive layer intervening (S21). After the fastening of both parts is completed, the rear protective film 9 is attached to the surface on which the electromagnetic shielding layer 2 is provided (S22). Here, the rear protective film attaching process (S22) may be performed after the firing process (S4), in which case it is not preferable because it is difficult to attach the rear protective film by the remaining heat during the heating process. However, after the sufficient cooling process is performed, it is preferable to attach the rear protective film in advance, for example, the rear protective film may be attached before the transfer of the substrate-side components.

In the manufacturing method of the above-mentioned glass filter, manufacture is completed by attaching the board | substrate side component and functional film layer side component on which manufacture was completed once with an adhesive. Therefore, there is an advantage in that a decrease in production yield that may occur when a plurality of processes are performed is prevented. For example, when a plurality of films are stacked on a substrate, the substrate is divided and left for a long time, or transfer and posture change are required. In this case, the substrate may have dirt or damage to the wiring of the electromagnetic wave shielding layer, There is a high possibility that the substrate may be damaged. On the contrary, according to this embodiment, since all the processes are completed by attaching the functional film layer side components to the substrate once with the adhesive, the tack time of the process is reduced, the yield of the product is improved, and the processing time is expected to be reduced. Can be.

The present invention may further include other embodiments which may be modified as follows in addition to the preferred embodiments described above. However, in the case of the embodiment described below, the description will be mainly focused on the configuration that is different from the first embodiment, and the description given in the first embodiment will be used for the same parts.

Second Embodiment

3 is a cross-sectional view of the glass filter of the plasma display device according to the second embodiment.

Referring to FIG. 3, the substrate 11, the second pressure sensitive adhesive layer 15, the black frame layer 14, and the functional film layer 13 are each the substrate 1 of the first embodiment, the pressure sensitive adhesive layer 5, Since it corresponds to the black frame layer 4 and the functional film layer 3, the description of 1st Example can be used as it is.

In the second embodiment, the electromagnetic shielding layer 12 may be formed of a film layer 17 and a conductive pattern layer 18. The electromagnetic wave shielding layer 12 may provide a conductive pattern layer 18 by coating a conductive material, such as copper, on the film layer 17 of PET by an electron beam deposition method, a sputtering method, a wet coating method, or the like. . The electromagnetic wave shielding layer 12 may be coated on the substrate 11 by the first adhesive layer 16. The first pressure-sensitive adhesive layer 16 may be made of the same raw material as the second pressure-sensitive adhesive layer 15, but may be provided in a state in which only a binder and a solvent including color correction dyes and near-infrared ray blocking dyes are excluded.

The second embodiment differs from the first embodiment in that the first pressure-sensitive adhesive layer 16 is interposed below the substrate 11 to provide the electromagnetic wave shielding layer 12, so that the functional film is provided on the front and rear surfaces of the substrate 11. The layer 13 and the electromagnetic wave shielding layer 12 are individually adhered by an adhesive. According to such a manufacturing method, there is a disadvantage that the manufacturing process requires one more step, but each layer provided on the upper side of the substrate 11 can obtain the same effects as in the first embodiment. Furthermore, in the case of the second embodiment, when the substrate 11 does not need to be strengthened, the material cost can be further reduced by not having to pass through an expensive firing process. Of course, the other advantages of the first embodiment are retained.

Third Embodiment

4 is a cross-sectional view of the glass filter of the plasma display device according to the third embodiment.

Referring to FIG. 4, the substrate 21 and the electromagnetic shielding layer 22 may be made of the same layer as the substrate 1 and the electromagnetic shielding layer 22 of the first embodiment, respectively. Can be used as is.

In the third embodiment, the second pressure-sensitive adhesive layer 25, the first functional film layer 27, the black flame layer 24, the first pressure-sensitive adhesive layer 26, and the second functional film layer ( 23) are stacked. More specifically, the second pressure sensitive adhesive layer 25 and the first pressure sensitive adhesive layer 26 are for attaching the functional film layers 23 and 27, respectively, and at least one of the two pressure sensitive adhesive layers 25 and 25. In the same manner as the pressure-sensitive adhesive layer 5 of the first embodiment, the color correction dye and the near infrared ray blocking dye may be included separately or together. In FIG. 4, all of the second pressure-sensitive adhesive layer 25 is illustrated. The second functional film layer 23 is the same layer as the functional film layer 3 of the first embodiment, and may be provided as a cured film layer to which a light reflection function is added. The black frame layer 24 may be provided on the rear side of the first functional film layer 27. The first functional film layer 27 may be provided as a general film exemplified by PET having no cured layer.

The manufacturing method of the glass filter concerning a 3rd Example is demonstrated.

The first functional film layer 27 and the second functional film layer 23 having the black frame layer 24 formed on the edge portion are attached by the first pressure sensitive adhesive layer 26. In this attaching process, the black frame layer 24 is stably placed at a predetermined position so that it is not affected by external contamination, and then the film can be stably moved and managed. However, the black frame layer 24 may be provided on the rear side of the first functional film layer 27, in which case the first functional film layer 27 is attached to the substrate 21, and then The method of adhering the 2nd functional film layer 23 can also be taken.

Although the third embodiment has a disadvantage in that two or more functional films are used, the dye or pigment of the black frame layer 24 and the second pressure-sensitive adhesive layer 26-in this case, the color correction dye and the near infrared blocking dye There is an advantage that the restriction of dye selection due to the mutual reaction between the color correction dye and the near-infrared blocking dye of-shall be included only in the second pressure-sensitive adhesive layer. This is because the dye or pigment of the black frame layer 24 is an organic dye.

In the present embodiment, there is no restriction on the selection of dyes or pigments, but may be suitably used depending on the type of plasma display device. Also in the case of the third embodiment, the same operation and effect can be expected for the same configuration as in the first embodiment.

Fourth Embodiment

5 is a cross-sectional view of the glass filter of the plasma display device according to the fourth embodiment.

Referring to FIG. 5, the second functional film layer 40 is attached to the front surface of the substrate 31 by the third pressure sensitive adhesive layer 33, and the front protective film ( 8) is attached. The cured film layer may be preferably applied to the second functional film layer 40. The first functional film layer 39 is attached to the rear surface of the substrate 31 by the second adhesive layer 35. The black frame layer 34 is formed on the rear surface of the first functional film layer 39, and the electromagnetic wave shielding layer 32 is formed on the rear surface by the first adhesive layer 36.

Here, the pressure-sensitive adhesive layer 36, 35, 33 may be optionally or together with a color correction dye and a near-low UV blocking dye. However, it will be preferable to prevent the color reaction dye and the near-infrared blocking dye from being included in the pressure-sensitive adhesive layer that the black frame layer is in contact with. In addition, since the electromagnetic shielding layer is the same as the second embodiment, the electromagnetic shielding layer is used.

In the case of the fourth embodiment, the problem due to the complexity of the process increases, but the effect of reducing the influence between dyes and the use of the substrate when it is not necessary to further enhance the effect of reducing the cost.

Further, in the fourth embodiment, when the substrate 31 can control the reflection of external light by itself as a reinforcing substrate, the third pressure-sensitive adhesive layer 33 and the second functionality provided on the upper side of the substrate 31 are provided. The film layer 40 may be removed.

The spirit of the present invention is not limited to the above-described embodiments, and those skilled in the art can easily suggest other embodiments falling within the scope of the same idea by adding, changing, deleting, and adding components.

The glass filter of the present invention can be expected to further increase the market competitiveness by facilitating the manufacturing process of the plasma display device with extreme price competition while maintaining the original function of the filter and reducing the manufacturing cost.

1 is a cross-sectional view of a glass filter of the plasma display device of the first embodiment.

2 is a flowchart for explaining a glass filter manufacturing method according to the first embodiment.

Fig. 3 is a sectional view of the glass filter of the plasma display device of the second embodiment.

Fig. 4 is a sectional view of the glass filter of the plasma display device of the third embodiment.

Fig. 5 is a sectional view of the glass filter of the plasma display device of the fourth embodiment.

Claims (17)

A glass substrate spaced forward in the PDP; A functional film layer having at least one black frame layer defining an effective screen; An adhesive layer for adhering the glass substrate and the functional film layer; And Glass filter of the plasma display device including an electromagnetic shielding layer for blocking the electromagnetic waves generated in the PDP. The method of claim 1, The electromagnetic wave shielding layer is provided on the rearmost layer of the glass filter. The method of claim 1, And the electromagnetic shielding layer is heated after the raw material forming the electromagnetic shielding layer is printed on the outer surface of the glass substrate so that the shielding raw material is fired and the glass substrate is reinforced. The method of claim 1, The electromagnetic wave shielding layer is offset glass printing on the glass substrate. The method of claim 1, The functional film layer is a glass filter is a cured film layer. The method of claim 1, The pressure-sensitive adhesive layer is a glass filter containing a color correction dye and a near infrared ray blocking dye. The method of claim 1, The black frame layer is a glass filter exposed toward the pressure-sensitive adhesive layer. The method according to any one of claims 1 to 7, The black frame layer is a glass filter is printed. The method of claim 8, The black frame layer is a glass filter which is organically printed by the screen printing method or gravure printing method. The method according to any one of claims 1 to 7, The functional film layer is a glass filter facing the coating layer forward. Providing an electromagnetic wave shielding layer on an outer surface of the glass substrate to provide a substrate side component, and separately forming a black frame layer defining an effective screen on an outer surface of the functional film layer to provide a functional film side component; Combining the substrate side component and the functional film side component with each other, Glass filter manufacturing method of the plasma display device. The method of claim 11, The electromagnetic wave shielding layer is formed by firing after the shielding material is offset printing on the outer surface of the glass substrate. The method of claim 11, The edge of the glass substrate is chamfered glass filter manufacturing method. The method of claim 11, The substrate side component and the functional film side component are fastened by an adhesive, and the adhesive includes at least a binder, a color correction dye, and a near infrared ray blocking dye. The method of claim 11, The black frame layer is a glass filter manufacturing method formed by an organic printing method. The method of claim 15, The organic printing method is a glass filler manufacturing method of the screen printer method or gravure printing method. The method of claim 11, The functional film layer is a cured film, the black frame layer is a glass filter manufacturing method formed on the film side of the cured film.

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