KR100741115B1 - Plasma display device - Google Patents

Abstract

A plasma display panel is provided to stably fix a direct-adhering filter onto a plasma display panel by using a wire in stead of an adhesive, thereby preventing the filter from being detached from the panel. A plasma display panel(110) displays an image, and a driving unit(120) operates the plasma display panel. The plasma display panel and the driving unit are supported by a chassis(130). At least a portion of a direct-adhering filter(140) is adhered onto the plasma display panel. The direct-adhering filter is fixed to the plasma display panel by at least one wire(150). The direct-adhering filter has an external-light anti-reflective layer comprising at least one of Co, Mn and Ru.

Description

Plasma display device

1 is a schematic exploded perspective view of a plasma display device according to an embodiment of the present invention.

FIG. 2 is a schematic partial side view showing a fixed portion of the direct attachment filter of FIG. 1. FIG.

3 is a schematic perspective view illustrating a method in which a direct filter is fixed to a plasma display panel according to an embodiment of the present invention.

FIG. 4 is a side view of the plasma display panel and the direct filter shown in FIG. 3.

Explanation of symbols on the main parts of the drawings

100: plasma display device

110 and 210: plasma display panel 120: driving device

130: chassis 140, 240: direct mounting filter

141: base film 142: conductive layer

143: optional light absorbing layer 144: external light reflection prevention layer

150, 250: wire 160: case

170: double-sided adhesive means 180: panel heat radiation sheet

The present invention relates to a plasma display device, and more particularly, to a plasma display device for stably fixing a direct-attach filter to a plasma display panel.

In recent years, the plasma display device, which is drawing attention as a replacement for the conventional cathode ray tube display device, is discharged after a discharge gas is filled between two substrates on which a plurality of electrodes are formed. A phosphor formed in a pattern is excited to emit visible light, thereby obtaining a desired image.

Such plasma display apparatuses typically have a filter, which serves to improve the quality of the plasma display apparatus. For example, the filter blocks electromagnetic waves harmful to the human body generated by the plasma display device, blocks near-infrared rays causing malfunctions in radiotelephones or remote controls, blocks neon light emission, and external light is reflected from the front surface of the plasma display panel. Functions to prevent the phenomenon.

Typically, such a filter is made of glass with a multilayer film attached thereto, and is mounted in front of the plasma display panel constituting the plasma display device. However, in recent years, a direct-attach filter made of only film, except for a glass material, is directly attached to a plasma display panel. Plasma display devices employing such a direct-attach filter are light in weight and thin in thickness, and thus can be applied. This is an expanding trend.

Such a conventional direct attachment filter has been fixed and adhered to the front surface of the plasma display panel by applying an adhesive between the direct attachment filter and the plasma display panel and bringing it into close contact. By the way, adhesion of the direct attachment filter using such an adhesive may change the adhesive force by heat and humidity at the time of attachment or after attachment, and the adhesive attachment phenomenon which frequently separates a direct attachment filter from a plasma display panel often produced.

As described above, since the performance of the plasma display device is often degraded due to the poor contact of the conventional direct attach filter, a new plasma display device capable of stably and easily attaching the direct attach filter to the plasma display panel is provided. There is a need to develop.

The main object of the present invention is to provide a plasma display device capable of stably fixing a direct-attach filter to a plasma display panel.

The present invention provides a plasma display panel for implementing an image, a driving device for driving the plasma display panel, a chassis for supporting the plasma display panel and the driving device, and at least a portion of the plasma display panel directly attached to the plasma display panel. Provided is a plasma display device including a filter and at least one wire for fixing the direct-attach filter to the plasma display panel.

Here, the drive device preferably includes a circuit element and a circuit board on which the circuit element is disposed.

Here, the direct filter may be provided with an external light reflection prevention layer.

The external light reflection prevention layer may include at least one selected from the group consisting of cobalt (Co), manganese (Mn), and ruthenium (Ru).

Here, the direct attachment filter may have a conductive layer.

The conductive layer may include at least one selected from the group consisting of ITO, silver (Ag), gold (Au), copper (Cu), and aluminum (Al).

Here, the direct attachment filter may have a selective light absorbing layer.

Here, the wire may be formed of a material that can transmit visible light.

Here, the wire may be formed of synthetic fibers.

Here, the wire may be formed of an elastic material.

Here, the wire may surround the assembly consisting of the direct attachment filter, the plasma display panel and the chassis.

Here, the wire may surround the assembly consisting of the filter attached directly to the plasma display panel.

An adhesive may be disposed between the direct attach filter and the plasma display panel.

The plasma display panel may further include a case accommodating the plasma display panel, the driving device, the chassis, the filter attached directly to the wire, and the wire.

Hereinafter, preferred embodiments will be described in detail with reference to the accompanying drawings.

1 is a schematic exploded perspective view of a plasma display device according to an exemplary embodiment of the present invention, and FIG. 2 is a schematic partial side view illustrating a fixing portion of the direct-attached filter of FIG. 1.

As shown in FIG. 1 and FIG. 2, the plasma display apparatus 100 according to an exemplary embodiment of the present invention includes a plasma display panel 110, a driver 120, a chassis 130, and a filter attached directly to implement an image. 140, a wire 150, and a case 160 are configured.

Plasma display panel 110 is mounted on the front of the chassis 130, the combination of the plasma display panel 110 and the chassis 130 is a double-sided adhesive means 170 is attached to the rear of the plasma display panel 110 It is made through a medium, a double-sided tape is used as the double-sided adhesive means 170.

The driving device 120 includes a circuit element 121 for driving the plasma display panel and a circuit board 122 on which the circuit element 121 is disposed. Here, the circuit board 122 is mounted to the chassis 130, for which the boss 131 and the bolt 132 is used.

A panel heat dissipation sheet 180 having excellent thermal conductivity is interposed between the plasma display panel 110 and the chassis 130, and heat generated during operation of the plasma display panel 110 may be discharged to the chassis 130. It is supposed to be.

The panel heat dissipation sheet 180 of this embodiment is in close contact with both the plasma display panel 110 and the chassis 130, but the present invention is not limited thereto. That is, the panel heat dissipation sheet of the plasma display device of the present invention may be formed thin and may be in close contact with the plasma display panel only.

The chassis 130 is made of conductive iron or aluminum, and includes a chassis base 130a and a chassis bent portion 130b.

The chassis 130 of the present embodiment is made of iron or aluminum, but the present invention is not limited thereto. That is, the material of the chassis of the present invention is not particularly limited. However, in consideration of the weight of the plasma display apparatus 100, the chassis 130 is preferably made of an aluminum material or a synthetic resin having a relatively light weight and high strength and rigidity.

The direct-attachment filter 140 includes a base film 141, a conductive layer 142, an optional light absorbing layer 143, and an external light reflection prevention layer 144. The conductive layer 142 is formed on the rear surface of the base film 141. The selective light absorbing layer 143 and the external light reflection preventing layer 144 are sequentially formed on the entire surface of the base film 141.

Base film 141 is used as the base of the direct-attachment filter, the material type is polyethersulphone (PES, polyethersulphone), polyacrylate (PAR, polyacrylate), polyetherimide (PEI, polyetherimide), polyethylene naphthalate (PEN, polyethyelenen napthalate), polyethylene terephthalate (PET, polyethyeleneterepthalate), polyphenylene sulfide (PPS), polyallylate, polyimide, polycarbonate (PC), cellulose tree Acetate (TAC), cellulose acetate propionate (CAP), preferably, polycarbonate (PC), polyethylene terephthalate (PET, polyethyeleneterepthalate), cellulose tri acetate (TAC), Polyethylene naphthalate (PEN, polyethyelenen napthalate).

 The conductive layer 142 may be formed of a transparent thin layer or may be formed in a mesh shape, such as indium tin oxide (ITO), silver (Ag), gold (Au), copper (Cu), and aluminum (Al). It may include a conductive material such as).

The conductive layer 142 is for shielding electromagnetic waves, but also has an effect of blocking near infrared rays. The conductive layer 142 may be formed by sputtering, vacuum evaporation, ion plating, chemical vapor deposition (CVD), physical vapor deposition (PVD), or fine particle application, and in particular by sputtering. When ITO or silver (Ag) is formed in a transparent thin layer structure, the near-infrared blocking effect can be expected more.

The selective light absorbing layer 143 is made of a light absorbing material capable of selectively absorbing light of a specific wavelength band as needed. The selective light absorbing layer 143 of the present embodiment is a light absorbing material for absorbing neon light or light of a near infrared band. It can be made by coating.

Here, the light absorbing material capable of absorbing neon light may be porphyrin-based, scarylium-based, cyanine-based material, and the like. The light absorbing material capable of absorbing light in the near infrared band may be a metal complex or immonium. And phthalocyanine, cyanine, anthraquinone and dithiol materials.

The external light antireflection layer 144 may be formed using materials of cobalt (Co), manganese (Mn), ruthenium (Ru), and selective absorption by sputtering, vacuum deposition, ion plating, chemical vapor deposition, physical vapor deposition, or the like. Formed in layer 143.

Although the direct filter 140 of the present exemplary embodiment includes only the base film 141, the conductive layer 142, the optional light absorbing layer 143, and the external light reflection preventing layer 144, the present invention is not limited thereto. That is, the external light reflection prevention layer of the present invention may be additionally formed other layers as necessary, such as a hard coating material for preventing scratches may be coated.

The direct attachment filter 140 is fixed to the front surface of the plasma display panel 110 by a wire 150.

The wire 150 is made of synthetic fibers such as nylon, acrylic, polyester, and the like, through which visible light is transmitted, so that the visible light projected from the plasma display panel 110 may be transmitted and have a predetermined elasticity.

Although the wire 150 of the present embodiment is made of a material through which visible light is transmitted, the present invention is not limited thereto. That is, the wire of the present invention has a sufficiently thin diameter to prevent distortion of the image due to the wire, and has a strength enough to withstand the tension enough to fix the direct-attach filter to the plasma display panel. If present, it may be made of a material that does not transmit visible light.

In addition, although the wire 150 of the present embodiment is made of synthetic fibers, the present invention is not limited thereto. That is, the wire of the present invention may be made of natural fibers such as silk as long as the wire has sufficient strength and durability to fix the direct attachment filter to the plasma display panel.

In addition, the wire 150 of the present embodiment is made of a material having elasticity, the present invention is not limited thereto. That is, the wire of the present invention may be made of a material having no elasticity as long as the direct attachment filter can be fixed to the plasma display panel. However, when the wire is made of an elastic material as in the present embodiment, the wire is installed in a state in which the wire is stretched while being tensioned at both ends of the wire, and then the filter attached directly is secured by using the elastic force of the restored wire. There is an advantage that can be fixed.

As shown in FIG. 1, the wire 150 has a closed loop shape to surround the assembly 190 including the direct-attach filter 140, the plasma display panel 110, and the chassis 130, and has a predetermined tension. By being installed so as to be maintained, the direct attachment filter 140 is fixed to the assembly 190. Here, the predetermined tension means an appropriate tension such that the direct filter 140 is not separated from the plasma display panel 110.

That is, the direct attachment filter 140 is fixed to the assembly 190 by the wire 150, thereby being closely adhered to the plasma display panel 110, and the shape of the wire 150 or the wire 150 is assembled to the assembly 190. There is no particular limitation on the position surrounding 190. That is, as shown in FIG. 1, the wire 150 may be formed to surround the edge of the assembly 190, and the wire 150 may be positioned to surround the center of the assembly 190.

In this embodiment, the wire 150 is configured to have a closed loop shape to surround all of the assembly 190, but the present invention is not limited thereto. That is, the wire of the present invention surrounds the direct-attachment filter, and both ends thereof may be fixed to the plasma display panel or the chassis. In this case, the wire should be installed to maintain a predetermined tension to fix the direct-attachment filter. .

In the present embodiment, only the wire 150 is used to fix the direct-attach filter 140 to the plasma display panel 110, but the present invention is not limited thereto. That is, according to the present invention, the adhesive can be further disposed between the direct-attach filter and the plasma display panel while the direct-attach filter and the plasma display panel are fixed by using wires, in which case the direct-attach filter is attached to the plasma display panel. It can be fixed more stably.

The case 160 includes a front case 161 in which the window 161a is formed, and a rear case 162 disposed at the rear of the chassis 130.

The case 160 includes plastic and metal materials, and accommodates the plasma display panel 110, the driving device 120, the chassis 130, the direct attachment filter 140, and the wire 150.

An operator may install the direct attachment filter 140 of the plasma display apparatus 100 according to the present embodiment as follows.

First, the worker adheres the direct attach filter 140 to the plasma display panel 110 to form an assembly 190 including the direct attach filter 140, the plasma display panel 110, and the chassis 130.

Then, the worker is positioned to surround all of the assembly 190 with the wire 150, and the wire 150, with a load applied to both ends of the wire 150 to maintain a predetermined tension on the wire 150 Connect both ends of each other. That is, since the wire 150 of the present embodiment has elasticity, the wire 150 is installed in a state in which tension is applied to both ends of the wire 150 and then stretched, and then the elastic force of the wire 150 is restored. The direct attachment filter 140 is securely fixed.

Next, the worker grounds a portion of the conductive layer 142 of the direct attachment filter 140 to the chassis 130 by using a grounding member (not shown), whereby the operator of the plasma display device 100 according to the present embodiment The attachment filter 140 is installed.

Hereinafter, the operation of the plasma display apparatus 100 according to the present embodiment and the operation of the direct attachment filter 140 will be described.

When the user operates the plasma display apparatus 100, the driving apparatus 120 is driven to apply a voltage to the plasma display panel 110.

When a voltage is applied to the plasma display panel 110, address discharge and sustain discharge occur, and the energy level of the discharged gas excited during sustain discharge is lowered to emit ultraviolet rays. The ultraviolet rays excite the phosphors of the phosphor layer applied in the discharge cell. The energy level of the excited phosphors is lowered to emit visible light, and the emitted visible light is emitted to form an image that can be recognized by a user.

At this time, the conductive layer 142 of the direct attachment filter 140 is grounded to the chassis 130, so that the direct attachment filter 140 can absorb electromagnetic waves and near infrared rays emitted from the plasma display apparatus 100, It serves to shield electromagnetic waves and near infrared rays. In addition, the selective light absorbing layer 143 of the direct attachment filter 140 selectively absorbs neon light and light in the near infrared band, and the external light reflection preventing layer 143 of the direct attachment filter 140 has the external light directly attaching filter 140. ) To prevent reflection.

Here, since the worker can fix the direct attachment filter 140 to the plasma display panel 110 by using the wire 150, the adhesive force is changed due to heat and humidity during or after mounting, and thus the direct attachment filter 140 is applied. The problem of separation from the plasma display panel 110 can be solved.

As described above, the plasma display apparatus 100 according to the exemplary embodiment of the present invention may fix the direct attach filter 140 to the plasma display panel 110 using the wire 150, and thus, the direct attach filter more stably. There is an advantage in that the 140 can be fixed to the plasma display panel 110.

Hereinafter, one modification of an embodiment of the present invention will be described with reference to FIGS. 3 and 4, but will be described based on different matters from the embodiment of the present invention.

3 is a schematic perspective view illustrating a method in which a direct filter is fixed to a plasma display panel according to an embodiment of the present invention, and FIG. 4 is a side view of the plasma display panel and the direct filter shown in FIG. 3. .

One variation of the embodiment of the present invention differs from the above-described embodiment of the present invention in that the assembly 290 that the wire 250 surrounds is composed of only the direct-attach filter 240 and the plasma display panel 210. .

As shown in FIGS. 3 and 4, the worker surrounds the edge of assembly 290 with wire 250 and then loads both ends of wire 250 to maintain a predetermined tension on wire 250. In the quasi state, both ends of the wire 250 are connected to each other.

Here, the reason why the wire 250 of one modification of the present embodiment surrounds only the edge of the assembly 290 is to prevent interference with the panel heat-radiating sheet and the double-sided adhesive means. In other words, if the wire 250 surrounds the central portion of the assembly 290, the process of mounting the assembly 290 to the chassis later may be interrupted by the wire 250.

As described above, after the direct attachment filter 240 is fixed to the plasma display panel 210 with the wire 250, the assembly 290 is attached to the chassis, and the assembly 290 and the chassis are accommodated in the case. A plasma display device according to a variation of the present embodiment is assembled.

As described above, according to one modified example of the present embodiment, the wire 250 is surrounded by the assembly 290 including only the direct-attach filter 240 and the plasma display panel 210, and thus, the wire 250 than the present embodiment. Material cost savings can be achieved to reduce manufacturing costs. In addition, since the wire is not positioned to the rear surface of the chassis on which the circuit board is mounted, there is an advantage that interference with the circuit board and the like can be prevented.

The configuration, operation, and effects of the plasma display device 100 according to an embodiment of the present invention other than the configuration, operation, and effects described above are similar to the configuration, operation, and effect of the plasma display device 100 according to the embodiment of the present invention. Since it is the same as the effect, it will be omitted in this description.

As described above, the plasma display device according to the present invention can fix the direct-attach filter to the plasma display panel using a wire, so that the direct-attach filter can be more stably fixed to the plasma display panel. .

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

Claims (14)

A plasma display panel for implementing an image; A driving device for driving the plasma display panel; A chassis supporting the plasma display panel and the driving device; A direct filter attached to at least a portion of the plasma display panel; And And at least one wire for fixing the attachment filter to the plasma display panel. The method of claim 1, The driving device includes a circuit element and a circuit board on which the circuit element is disposed. The method of claim 1, The direct filter includes a plasma display device having an external light reflection prevention layer. The method of claim 3, The external light antireflection layer includes at least one selected from the group consisting of cobalt (Co), manganese (Mn), and ruthenium (Ru). The method of claim 1, The direct attach filter includes a conductive layer. The method of claim 5, The conductive layer includes at least one selected from the group consisting of ITO, silver (Ag), gold (Au), copper (Cu), and aluminum (Al). The method of claim 1, The direct attach filter includes a selective light absorbing layer. The method of claim 1, The wire is a plasma display device formed of a material that can transmit visible light. The method of claim 1, The wire is a plasma display device formed of synthetic fibers. The method of claim 1, And the wire is formed of an elastic material. The method of claim 1, And the wire surrounds an assembly consisting of the direct attachment filter, the plasma display panel, and the chassis. The method of claim 1, And the wire surrounds the assembly consisting of the direct-attach filter and the plasma display panel. The method of claim 1, And an adhesive disposed between the direct filter and the plasma display panel. The method of claim 1, And a case accommodating the plasma display panel, the driving device, the chassis, the filter attached directly to the wire, and the wire.

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