JP2003029651A - Plasma display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To are an inexpensive cable for a connection with external equipment in a plasma display device. SOLUTION: A main body 21 of plasma display is composed of a panel, in which a pair of substrates at least a front side of each of which is transparent are located while facing each other so that a discharging space can be formed between the substrates and an electrode group is located on each of substrates, and a display driving circuit block located on a chassis member and for performing display by impressing a signal to the panel. A part of a signal cable 24 for input/output and a power supply cord 27 for electrically connecting the main body 21 of plasma display and external equipment 23 is held by a clamper 25 equipped with a ferrite core.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a large screen, thin type,
The present invention relates to a plasma display device known as a lightweight display device.

[0002]

2. Description of the Related Art In this plasma display device, ultraviolet rays are generated by gas discharge, and phosphors are excited by the ultraviolet rays to emit light to perform color display. The display cell partitioned by the partition is provided on the substrate, and the phosphor layer is formed on the display cell.

This plasma display device is roughly classified into an AC type and a DC type in terms of driving, and there are two types of discharge types: a surface discharge type and a counter discharge type. However, high definition, large screen and Due to the ease of manufacturing, at present, the mainstream plasma display device is a surface discharge type of three-electrode structure, which has a pair of display electrodes adjacent in parallel on one substrate and the other. It has address electrodes arranged in a direction intersecting with the display electrodes on the substrate, partition walls, and a phosphor layer. Since the phosphor layer can be relatively thick, it is suitable for color display by the phosphor.

Such a plasma display device is
Among the flat panel displays, it is possible to display at a higher speed than a liquid crystal panel, has a wide viewing angle, is easy to upsize, and has a high display quality due to its self-luminous type. It has been particularly attracting attention and is used for various purposes as a display device in a place where many people gather and as a display device for enjoying a large-screen image at home.

Conventionally, in this type of plasma display device, when connecting to an external device, a plasma display main body 51 and an external device 52 are connected to a signal cable 53 with a ferrite core and a power cord 54 with a ferrite core as shown in FIG. By connecting using
Unnecessary radiation emitted from the cable is suppressed.

[0006]

However, in the above structure, for a plasma display device in which many signal cables are often used to connect to external equipment, each cable has an expensive ferrite core. There was a problem that I had to use.

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to use an inexpensive cable for connection with an external device in a plasma display device.

[0008]

To achieve the above object, in a plasma display device of the present invention, a pair of substrates, at least the front side of which is transparent, are arranged so as to face each other so that a discharge space is formed between the substrates, and the substrates are mounted on the substrates. A plasma display main body is configured by a panel on which an electrode group is arranged and a display drive circuit block which is arranged on a chassis member and applies a signal to the panel to perform display, and the plasma display main body and an external device are electrically connected. A part of the input / output signal cable and the power cord to be connected to is held by a holding member having a ferrite core.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, according to the first aspect of the present invention, a pair of substrates, at least the front side of which are transparent, are arranged so as to face each other so that a discharge space is formed between the substrates, and an electrode group is arranged on the substrates. And a display drive circuit block that is disposed on the chassis member and applies a signal to the panel to display, and a plasma display body is electrically connected to an external device. The signal cable for output and a part of the power cord are held by a holding member having a ferrite core.

The invention according to claim 2 of the present invention is
A pair of substrates, at least the front side of which is transparent, are arranged so as to face each other so that a discharge space is formed between the substrates, and an electrode group is arranged on the substrates, and a panel arranged on the chassis member and applying a signal to the panel to display. The display drive circuit block is used to configure the plasma display main body, and a part of a plurality of input / output signal cables for electrically connecting the plasma display main body and external devices is provided with a holding member equipped with a ferrite core. I have kept it.

Further, in the present invention, the holding member is fixed to the plasma display body or fixed to the stand of the plasma display body. In addition, one holding member holds a plurality of input / output cables and power cords.

A plasma display device according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 6, but the embodiment of the present invention is not limited to this.

First, the structure of the plasma display panel in the plasma display device will be described with reference to FIG. As shown in FIG. 1, a plurality of stripe-shaped display electrodes 2 forming pairs of scan electrodes and sustain electrodes are formed on a transparent front substrate 1 such as a glass substrate and cover the electrode group. Thus, the dielectric layer 3 is formed, and the protective film 4 is formed on the dielectric layer 3.

A plurality of columns covered with an overcoat layer 6 are formed on the rear substrate 5 facing the front substrate 1 so as to intersect the display electrodes 2 of the scan electrodes and the sustain electrodes. Stripe-shaped address electrodes 7 are formed. A plurality of partition walls 8 are arranged on the overcoat layer 6 between the address electrodes 7 in parallel with the address electrodes 7, and a phosphor layer 9 is provided on a side surface between the partition walls 8 and a surface of the overcoat layer 6. There is.

The substrate 1 and the substrate 5 are a display electrode 2 and an address electrode 7 which are scan electrodes and sustain electrodes.
Are arranged so as to be substantially orthogonal to each other, and are opposed to each other with a minute discharge space interposed therebetween, and the periphery is sealed, and one kind of helium, neon, argon, and xenon or a mixed gas is discharged into the discharge space. It is enclosed as a gas. Further, the discharge space is partitioned into a plurality of partitions by partition walls 8 to provide a plurality of discharge cells at which the intersections of the display electrodes 2 and the address electrodes 7 are located, and each of the discharge cells has red, green, and blue. The phosphor layers 9 are sequentially arranged for each color so that

FIG. 2 shows the electrode arrangement of this plasma display panel. As shown in FIG. 2, the scan electrodes, the sustain electrodes and the address electrodes have a matrix structure of M rows × N columns, and in the row direction. M rows of scan electrodes SCN1 to SCNM and sustain electrodes SUS1 to
Address electrodes D1 of N columns in which the SUSMs are arranged in the column direction
~ DN are arranged.

In the plasma display panel having such an electrode structure, by applying a write pulse between the address electrode and the scan electrode, address discharge is performed between the address electrode and the scan electrode, and after selecting a discharge cell. , Between the scan electrode and the sustain electrode,
By applying a periodic sustain pulse that is alternately inverted, a sustain discharge is generated between the scan electrode and the sustain electrode, and a predetermined display is performed.

FIG. 3 shows an example of the overall structure of a plasma display body incorporating the panel having the structure described above. In the figure, the housing that houses the panel 10 is
The front cover 11 is composed of a front frame 11 and a metal back cover 12, and an opening of the front frame 11 is made of glass or the like that also serves as an optical filter and protects the panel 10.
Are arranged. Further, for example, silver vapor deposition is applied to the front cover 13 in order to suppress unnecessary radiation of electromagnetic waves. Further, the back cover 12 has a plurality of ventilation holes 12 for releasing heat generated in the panel 10 and the like to the outside.
a is provided.

The panel 10 is held by being bonded to the front surface of a chassis member 14 made of aluminum or the like via a heat conductive sheet 15, and the chassis member 14 is then held.
A plurality of circuit blocks 16 for driving the display of the panel 10 are attached to the rear surface side. The heat conductive sheet 15 is for efficiently transmitting the heat generated in the panel 10 to the chassis member 14 and radiating the heat. The circuit block 16 includes an electric circuit for driving the display of the panel 10 and controlling the display. The electrode block extending to the edge of the panel 10 extends beyond the four edges of the chassis member 14. It is electrically connected by a plurality of extending flexible wiring boards (not shown).

Further, on the rear surface of the chassis member 14, a boss portion 14a for attaching the circuit block 16 and fixing the back cover 12 is provided by projecting integrally by die casting or the like. The chassis member 14
May be constructed by fixing a fixing pin to an aluminum flat plate.

FIG. 4 shows a state in which the plasma display main body and external equipment are electrically connected. As shown in FIG. 4, the input / output terminal unit 2 of the plasma display main body 21
2 and the external device 23 are connected by a signal cable 24. In order to suppress the emission of unnecessary radiation from the signal cable 24, a part of the signal cable 24 is held by a clamper 25 which is a holding member having a ferrite core. The clamper 25 is held by the input / output terminal portion 22 of the plasma display body 21 or a stand 26 that holds the plasma display body 21.

The power cord 27 is also used for the signal cable 2
As in the case of 4, a part is held by the clamper 25.

FIG. 5 shows another embodiment according to the present invention. In this example, one clamper 28 having a ferrite core is used to connect a plurality of input / output signal cables 24 and a power cord 27. I have kept it. The clamper 28 is constructed by simultaneously holding a plurality of ferrite cores inside, and is held by the input / output terminal portion 22 of the plasma display body 21 or the stand 26 holding the plasma display body 21 as in the above example. is doing.

The clamper 28 may be constructed by using a ferrite core having a size capable of holding a plurality of signal cables 24 at the same time, and one clamper 28 may be used for a plurality of signal cables 24 and a power cord. Two
Unwanted radiation emitted from 7 can be suppressed.

FIG. 6 shows an example in which a plurality of thin BNC cables 30 are attached to the ferrite core 29 to form a clamper. In this case, the BNC cables 30 are connected to the input / output terminals of the plasma display body 21.

[0026]

As described above, according to the plasma display device of the present invention, the signal cable and the power cord can be fixed and the unnecessary radiation radiated from these cables can be suppressed and stabilized. Therefore, it is possible to obtain the effect that it is not necessary to use a conventional signal cable with a ferrite core.

[Brief description of drawings]

FIG. 1 is a perspective view showing a schematic configuration of a panel of a plasma display device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing an electrode array of a panel of the plasma display device.

FIG. 3 is an exploded perspective view showing an internal arrangement structure of the plasma display device.

FIG. 4 is a schematic configuration diagram showing a connection state of the plasma display device with an electronic device.

FIG. 5 is a schematic configuration diagram showing another example of the connection state of the plasma display device with electronic equipment.

FIG. 6 is a schematic configuration diagram showing an example of a clamper which is also used to connect the plasma display device to an electronic device.

FIG. 7 is a schematic configuration diagram showing another example of a connection state of a conventional plasma display device with an electronic device.

[Explanation of symbols]

10 panels 21 Plasma display body 22 Input / output terminal section 23 External equipment 24 signal cable 25, 28 clamper 26 stand 27 power cord

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Claims (5)

[Claims] 1. A panel in which a pair of substrates, at least the front side of which are transparent, are arranged so as to face each other so that a discharge space is formed between the substrates and an electrode group is arranged on the substrates, and a panel which is arranged on a chassis member and which transmits signals to the panels. The display drive circuit block that applies voltage to display the plasma display body is composed of the input / output signal cable for electrically connecting the plasma display body and external equipment, and part of the power cord to the ferrite core. A plasma display device, which is held by a holding member provided. 2. A panel in which a pair of substrates, at least the front side of which are transparent, are arranged so as to face each other so that a discharge space is formed between the substrates and an electrode group is arranged on the substrates, and a panel which is arranged in a chassis member and receives signals from the panels. A display drive circuit block that applies a voltage to display a plasma display main unit is configured, and a part of a plurality of input / output signal cables for electrically connecting the plasma display main unit and external devices is connected to a ferrite core. A plasma display device, which is held by a holding member provided. 3. The plasma display device according to claim 1, wherein the holding member is fixed to the plasma display body. 4. The plasma display device according to claim 1, wherein the holding member is fixed to a stand of the plasma display body. 5. The plasma display device according to claim 1, wherein a plurality of signal cables for input and output and a power cord are held by one holding member.