KR20060101077A - Plasma display apparatus - Google Patents

Abstract

SUMMARY OF THE INVENTION The present invention aims to provide a plasma display apparatus having a structure in which a chassis base is unnecessary, and in order to achieve the above object, the present invention provides: a front substrate, and formed on at least one of an upper side and a lower side at a common portion and a common portion. A plasma display panel including a rear substrate having a vertical circuit support and a plurality of electrodes generating plasma discharge in the discharge space, wherein the plasma display panel emits visible light to the outside through the front substrate in accordance with the plasma discharge in the discharge space; And at least one circuit board supported by the vertical circuit support part to drive the plasma display panel.

Description

Plasma display apparatus

1 is an exploded perspective view showing a conventional plasma display device.

2 is an exploded perspective view illustrating a plasma display device according to a first embodiment of the present invention.

3 is an exploded perspective view illustrating an enlarged portion A of FIG. 2.

FIG. 4 is a front view illustrating the plasma display device of FIG. 2 from the front.

5 is a cross-sectional view taken along the line VV of FIG. 2.

FIG. 6 is a diagram illustrating an arrangement state of circuit parts and electrodes illustrated in FIG. 2.

FIG. 7 is a timing diagram for describing an embodiment of a driving signal of the panel shown in FIG. 2.

8 is an exploded perspective view illustrating a plasma display device according to a second embodiment of the present invention.

9 is an exploded perspective view illustrating part B of FIG. 8 in an enlarged manner.

FIG. 10 is a cross-sectional view taken along the line VII-VII of FIG. 8.

FIG. 11 is a front view illustrating the plasma display device of FIG. 8 from the front.

<Brief description of the major symbols in the drawings>

100, 200: plasma display device

110, 210: plasma display panel

120, 220: front substrate 121, 221: sustain discharge electrode

122 and 222 scan electrodes 123 and 223 sustain electrodes

130, 230: back substrate 130a, 220a: common part

130v, 230v: vertical circuit support

130h, 230h: horizontal circuit support

131 and 231 address electrodes 150 and 250 circuit portions

151 and 251 control board 152 and 252 holding circuit board

152Y, 252Y: Y circuit board 153, 253: address circuit board

170, 270: pedestal

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device. More particularly, the present invention relates to a plasma display device in which an image is displayed to the outside by using a plasma discharge, and a chassis member is unnecessary and its structure is simplified.

Plasma display device is a flat panel display that displays images by using gas discharge phenomenon. It is excellent in various display ability such as display capacity, brightness, contrast, afterimage and viewing angle, and it is possible to replace cathode ray tube with thin and large display. It is in the spotlight as the next generation flat panel display.

Figure 1 shows a conventional conventional plasma display device. Referring to FIG. 1, a conventional plasma display apparatus 10 includes a plasma display panel 20, a chassis base 40 supporting the plasma display panel 20, the plasma display panel 20 and a chassis base. (40) The circuit part 50 provided in the back side is basically provided.

The plasma display panel 20 includes a front substrate and a back substrate, and electrodes are formed between the panels to implement an image. A filter 25 is usually installed on the front surface of the plasma display panel 20. The filter 25 includes an electromagnetic shielding layer for blocking electromagnetic waves harmful to a human body generated when the plasma display panel 20 is driven. do.

In addition, a chassis base 40 is disposed behind the plasma display panel 20 configured as described above, and the chassis base 40 supports the plasma display panel 20, and from the plasma display panel 20. It receives heat and releases it to the outside.

The plasma display panel 20 is fixed to the chassis base 40 by an adhesive member 35 such as a double-sided tape. In addition, a heat dissipation sheet 30, which is a heat conduction medium, is provided between the plasma display panel 20 and the chassis base 40, and the heat dissipation sheet 30 receives heat generated from the plasma display panel 20 from the chassis base. It functions to discharge to the outside via (40).

The circuit unit 50 is mounted to the rear of the chassis base 40 coupled to the plasma display panel 20. The circuit unit 50 includes elements for driving the plasma display panel 20.

The display panel 20 and the chassis base 40 configured as described above are accommodated by the case 70. The case 70 includes a front cabinet 71 installed in front of the display panel 20 and the chassis. It may be made of a back cover 72 installed at the rear of the base 40.

Meanwhile, the circuit unit 50 drives the plasma display panel 20 by transmitting an electrical signal to the plasma display panel 20 by at least one or more signal transmission means 80. The signal transmission means 80 may be protected by the shielding plate 60.

However, the plasma display apparatus 10 having such a structure requires a chassis base 40 formed of iron or aluminum in order to support the plasma display panel 20. As a result, the total weight of the plasma display apparatus 10 is increased.

In addition, since the chassis base 40 is manufactured through a press mold or a casting mold, a manufacturing cost for manufacturing such a press mold or a casting mold and a material cost of the chassis base 40 itself increase. In addition, an adhesive member 35 is required to bond the chassis base 40 and the plasma display panel 20 to increase the material cost of the adhesive member and increase the manufacturing process.

In addition, since the plasma display panel 20 is adhered to the chassis base 40 by the adhesive member 35, the rear surface of the plasma display panel 20 is not directly exposed to the outside air so that the plasma display panel 20 is generated from the plasma display panel 20. It is not easy to dissipate heat to the outside. In order to solve this problem, although the heat dissipation sheet 30 is interposed between the plasma display panel 20 and the chassis base 40, there is also a problem that the heat dissipation sheet material cost and manufacturing process increases.

An object of the present invention is to provide a plasma display apparatus having a structure in which a chassis base is unnecessary.

Another object of the present invention is to provide a plasma display device having a structure that can effectively radiate heat generated from the back of the plasma display panel to the outside without using a separate member.

A plasma display device according to a first embodiment of the present invention for achieving the above object is:

A back substrate having a front substrate, a common portion forming a discharge space between the front substrate, and a vertical circuit support portion extending from the common portion to at least one of an upper side and a lower side, and a plurality of plasma generating generations in the discharge space. A plasma display panel having electrodes of light emitting the visible light to the outside through the front substrate in accordance with the plasma discharge in the discharge space; And

At least one circuit board supported by the vertical circuit support part is provided, and a circuit part for driving the plasma display panel is provided.

The electrodes may include: address electrodes extending upward and downward; In the discharge space disposed between the address electrodes, it is preferable to include sustain discharge electrodes for generating plasma discharge together with the address electrodes. In this case, the circuit unit includes a sustain circuit board for applying a voltage to the sustain discharge electrodes and an address circuit board for applying a voltage to the address electrodes, wherein the address circuit board is formed by the vertical circuit supporting unit. It is desirable to be supported.

On the other hand, it is preferable that the voltage is applied to the electrodes in a single scan method, and the vertical circuit support part is disposed below the common part.

In addition, the sustain discharge electrode includes a sustain electrode and a scan electrode, and a series of driving cycles including a reset period, an address period, and a sustain period is repeated in the sustain electrode, the scan electrode, and the address electrodes. Preferably, a voltage is applied, and the voltage applied to the sustain electrode through the driving period is a constant voltage having a constant magnitude.

In this case, the constant voltage applied to the sustain electrode is preferably a ground voltage.

The rear substrate may further include a horizontal side circuit support part formed to extend at least one side from the common part.

Preferably, the vertical circuit supporter is combined with a pedestal for supporting the plasma display panel.

In addition, it is preferable that a heat conductive member is attached to the rear surface of the rear substrate. In this case, the heat conductive member is made of a metal material, and preferably in contact with at least part of the circuit part.

The plasma display panel may include: barrier ribs disposed between the front substrate and the rear substrate to define discharge cells together with the front substrate and the rear substrate; Dielectric layers covering the electrodes; A phosphor layer disposed in the discharge cells; And a discharge gas in the discharge cells.

On the other hand, the plasma display device according to the second embodiment of the present invention includes: a common substrate for forming a discharge space between the rear substrate and the rear substrate and the vertical circuit support portion extending from at least one of the upper side and the lower side in the common portion A plasma display panel having a front substrate, and a plurality of electrodes generating plasma discharge in the discharge space, wherein the plasma display panel emits visible light to the outside through the front substrate in accordance with the plasma discharge in the discharge space; And at least one circuit board supported by the circuit support unit, the circuit unit driving the plasma display panel.

The electrodes may include: address electrodes extending from side to side; It may be provided to extend up and down to intersect the address electrodes, the sustain electrodes and the scan electrodes for generating a plasma discharge. In this case, the circuit unit includes a sustain circuit board for applying a voltage to at least one of the sustain electrode and the scan electrode, and an address circuit board for applying a voltage to the address electrodes, wherein the sustain circuit board is on the vertical side. It is preferably supported by a circuit support.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 and 3, the plasma display apparatus 100 according to the first exemplary embodiment of the present invention includes a plasma display panel 110 and a circuit unit 150.

The plasma display panel 110 includes a front substrate 120, a rear substrate 130, and a plurality of electrodes 121 and 131. The front substrate 120 passes visible light to the outside through the front substrate 120, and is made of a transparent material such as glass.

The rear substrate 130 is spaced apart from the rear of the front substrate 120 and forms a discharge space between the rear substrate 130 and the front substrate 120. A plurality of electrodes 121 and 131 are disposed between the rear substrate 130 and the front substrate 120. When a predetermined voltage is applied to the electrodes 121 and 131, plasma discharge is generated to generate ultraviolet rays.

The phosphor layer 138 and a discharge gas (not shown) may be disposed in the discharge cell. The phosphor layer 138 is disposed in the discharge space, and the ultraviolet rays generated by the plasma discharge collide therewith to emit visible light.

The electrodes may include sustain discharge electrodes 121 and address electrodes 131. The sustain discharge electrodes 121 may be disposed in the discharge cell Ce and may be divided into a scan electrode 122 and a sustain electrode 123. The scan electrode 122 and the sustain electrode 123 are transparent electrodes 122a and 123a made of a transparent material for passing visible light, respectively, and a bus made of a metallic material to improve electrical conductivity of the transparent electrode. Electrodes 122b and 123b may be provided. If the plasma display device includes transparent electrodes 122a and 123a, and the transparent electrode is disposed on the rear side of the front substrate 120 where the image is implemented, a transparent electrode such as ITO is used to easily transmit visible light. It is preferable. On the other hand, the sustain discharge electrodes 121 may not be disposed inside the discharge cell Ce, in which case the transparent electrodes 122a and 123a may be unnecessary.

The address electrodes 131 may be formed in contact with or adjacent to the front surface of the back substrate 130. In this case, since the light transmittance does not need to be considered, the selection of electrode materials is wide, and electrical Ag, Cu, Cr or the like having high conductivity is preferably used.

The sustain discharge electrodes 121 and the address electrodes 131 may be filled by the dielectric layers 125 and 135, respectively. When the address electrodes 131 are formed on the front surface of the back substrate 130, the address electrodes 131 may be covered by the back dielectric layer 135, and the phosphor layer 138 may be formed on the back dielectric layer 135. have. In addition, when the sustain discharge electrodes 121 are formed on the rear surface of the front substrate 120, the sustain discharge electrodes 121 may be covered by the front dielectric layer 125. In this case, the dielectric layers 125 and 135 are dielectrics capable of inducing charge while preventing cations or electrons from colliding with the sustain discharge electrode 121 and / or the address electrode 131 during the discharge and damaging the electrodes. Although formed, such dielectrics include PbO, B ₂ O ₃ , SiO _2, and the like.

Alternatively, the address electrodes 131 may not be disposed in contact with or adjacent to the front surface of the rear substrate, and the electrodes disposed in contact with or adjacent to the rear surface of the front substrate 120 may be combined with address discharge and sustain discharge.

A partition wall 137 may be formed between the front substrate 120 and the rear substrate 130. The partition wall 137 may be disposed between the discharge cells Ce together with the front substrate 110 and the rear substrate 130. Function to partition

A protective film 127 may be formed on the rear surface of the front dielectric layer 125, and the protective film 127 may protect the front dielectric layer 125 and emit secondary electrons to facilitate the discharge.

The phosphor layer 138 includes a component that emits visible light by receiving ultraviolet rays emitted by a sustain discharge, which will be described later. The red phosphor layer formed on the red light emitting subpixel is formed of a phosphor such as Y (V, P) O ₄ : Eu or the like. Wherein the green phosphor layer formed on the green light emitting subpixel includes phosphors such as Zn ₂ SiO ₄ : Mn, YBO ₃ : Tb, and the like, and the blue phosphor layer formed on the blue light emitting subpixel includes phosphors such as BAM: Eu and the like. do.

The front substrate 120 and the rear substrate 130 are joined and sealed by a coupling member such as a frit 139. In this case, the front substrate 120 and the rear substrate 130 do not necessarily need to be coupled by a coupling member such as a frit. When the discharge gas in the discharge cells Ce is in a vacuum state, the vacuum state is performed. It may be combined with a pressure according to.

On the other hand, inside the discharge cells (Ce) discharges made of any one or two or more of these mixtures of neon (Ne), helium (He), or argon (Ar) including xenon (Xe) gas of about 10% The gas is filled. The front substrate 120, the rear substrate 130, the electrodes 121 and 131, the phosphor layer 138, and the discharge gas are formed to form one plasma display panel 110.

In this case, the electrodes 121 and 131 are connected to the circuit unit 150 for applying a voltage to them.

The circuit unit 150 transmits an electrical signal to the electrodes through the signal transmission member 180. The signal transmission member 180 may be a flexible circuit board such as a tape carrier package (TCP), a chip on film (COF), or the like. In this case, the signal transmission member 180 may be packaged by mounting at least one mounting element on each of the tape-shaped wiring units.

Meanwhile, according to the present invention, in particular, as shown in FIGS. 4 and 5, the back substrate 130 may be divided into a common part 130a and a vertical circuit support part 130v. The common part 130a is a part which is combined with the front substrate 120 to form a discharge space between the front substrate 120 and the vertical circuit support part 130v is in contact with the back substrate 130. At least one circuit board driving adjacent electrodes is supported.

That is, referring to FIG. 2 along with FIG. 4, when the electrodes 131 formed over the top and bottom are formed in contact with or adjacent to the rear substrate 130, the electrodes 131 are at least one of the upper side and the lower side of the common part. It is connected to the circuit boards 153 disposed in the driving, in this case, the circuit boards 151, 153 are supported by the vertical circuit support portion 130v of the rear substrate. The sustain discharge electrodes 121 may be disposed on the left and right sides of the plasma display panel 110, and the address electrodes 131 may be disposed on the top and bottom of the plasma display panel 110. Circuit boards 151 and 153 driving the electrodes 131 are supported by the vertical circuit support part 130v of the rear substrate.

In this case, although not shown, the circuit unit 150 may include an image processing board, a logic control board, an address circuit board, a sustain circuit board, a power supply board, and the like. In this case, each substrate may be formed separately, or two or more substrates may be formed by being integrated into one.

Here, the image processing board converts an external analog image signal into a digital signal to generate internal image signals such as 8-bit red, green and blue image data, clock signals, and vertical and horizontal synchronization signals, respectively.

The logic control substrate generates driving control signals according to an internal image signal from the image processor. The address circuit board 151 processes an address signal among driving control signals from a logic controller to generate a display data signal, and applies the generated display data signal to the address electrodes 131.

The sustain circuit board processes the X drive control signal and the Y drive control signal among the drive control signals from the logic controller and applies them to the sustain discharge electrodes 121. Y circuit board 152Y connected to scan electrode lines to apply voltage to the scan electrode 122 and X circuit board connected to sustain electrode lines to apply voltage to the sustain electrode 123 (not shown). It may be provided.

The power supply board generates and supplies an operating voltage required for the image processing board and the logic control board, and an operating voltage for the address circuit board and the sustain circuit board.

In this case, the circuit board supported by the vertical circuit support unit 130v is preferably an address circuit board 153, an image processing board, a logic control board, and a power supply board. In this case, FIGS. 4 and FIG. In 5, an image processing board, one control board 151 serving as a logic control board and a power supply board at the same time, and an address circuit board 153 combined with the control board are provided on the vertical circuit support 130v. Can be supported.

Therefore, the process of manufacturing the chassis base in the plasma display apparatus by the plasma display apparatus 100 according to the preferred embodiment of the present invention, and the chassis base 40 (see FIG. 1) provided in the conventional plasma display apparatus is not provided. Is removed. In addition, the material cost can be reduced by eliminating the need for the chassis base 40 (see FIG. 1) and the adhesive member 35 (see FIG. 1) for bonding the chassis base and the panel.

In addition, since the rear substrate 130 is directly exposed to the outside, heat generated in the rear substrate 130 can be directly cooled by air, so that a separate heat dissipation means is unnecessary. Moreover, although many structures are conventionally required so that the plasma display device can be hung on a wall, such a wall-supporting structure is unnecessary according to the present invention.

Meanwhile, a heat transfer member 140 (see FIG. 2) may be installed on the rear surface of the rear substrate in order to more smoothly discharge the heat generated from the rear substrate 130 to the outside. The heat transfer member 140 is preferably formed of a metal plate and in contact with the circuit unit 150. The metal plate may smoothly discharge heat from the rear surface of the rear substrate 140 to the outside. This is because it also functions to prevent EMI generated in the circuit unit 150.

 In this case, the horizontal circuit support part 130h extending to at least one side of the left and right sides of the common part 130a of the back substrate 130 may be further provided. The horizontal circuit support 130h functions to support the circuit boards 152 for driving the sustain electrodes 121 extending left and right, for example, as shown in FIG.

The plasma display device may be a direct current (DC) type, an alternating current (AC) type, a hybrid type (Hybrid) type, etc., depending on the driving method thereof, and a counter discharge type, a surface discharge type, etc. may be used according to the discharge structure. have. In order to drive the plasma display panel having such a structure, the gray level necessary for displaying an image is realized by adjusting the number of sustain discharges according to the video data, and one frame is typically discharged to express the gray level. An ADS (Address and Display period Separated) method may be used, which is divided into several subfields having different numbers of times. In this case, each subfield may be further divided into a reset period for uniformly discharging the discharge, an address period for selecting the light emitting cells to emit light, and a sustain period for expressing the gray level according to the number of discharges.

In particular, in the address period, an address discharge is generated between the electrodes as a period for selecting a discharge cell in which visible light is to be generated, and in the sustain period, sustain discharge is generated so that the visible light is actually generated in the discharge cell.

Meanwhile, in the present invention, as shown in FIGS. 6 and 7, the sustain electrodes 123_1: 123_m are fixed through the driving periods of the reset period PR, the address period PA, and the sustain period PS. It is preferable that a constant voltage having a magnitude is applied, and more preferably, the constant voltage applied to the sustain electrodes 123_1: 123_m is a ground voltage Vg. That is, when a constant constant voltage, in particular, a ground voltage is applied to all the sustain electrodes, a separate X circuit board for driving the sustain electrodes 123_1: 123_m is unnecessary, as shown in FIG. 6. This eliminates the need for a separate chassis member for supporting and holding the X circuit board, resulting in a simplified manufacturing process, reduced manufacturing cost, and superior appearance.

 An example of applying ground voltages to the sustain electrodes 123_1: 123_m will be described with reference to FIG. 7. As shown in FIG. 7, in the driving method basically applied to the plasma display apparatus, the reset period PR, the address period PA, and the sustain period PS are sequentially performed to form one subfield SF. do. First, a driving signal applied to the scan electrodes 122_1: 122_m in the reset period PR will be described. The sustain discharge voltage Vs may be applied to the scan electrodes 122_1: 122_m having the ground voltage Vg applied thereto. ) Is rapidly applied. Thereafter, a rising ramp signal is applied to the scan electrodes 122_1: 122_m by rising from the sustain discharge voltage Vs by a predetermined voltage Vset to reach the highest rising voltage Vs + Vset. The weak discharge is executed by this rising ramp signal, and as a result, negative charges start to accumulate in the vicinity of the scan electrodes 122_1: 122_m. Thereafter, the sustain discharge voltage Vs is rapidly applied to the scan electrodes 122_1: 122_m, and a falling ramp signal falling from the sustain discharge voltage Vs to the lowest falling voltage Vnf is applied. Here, the ground voltage Vg is applied to the sustain electrodes 123_1 and 123_m to maintain the ground state.

As a result of the continuous drop of voltage applied to the scan electrodes 122_1: 122_m, a discharge occurs, and as a result, some of the negative charges accumulated in the scan electrodes 122_1: 122_m are emitted. This means that an appropriate level of negative charge remains in the vicinity of the scan electrodes 122_1: 122_m to generate an address discharge. Meanwhile, a constant voltage, for example, a ground voltage Vg, is applied to the sustain electrodes 123_1: 123_m and the address electrodes 131_1: 131_n during the reset period PR. Through such a reset period PR, the charge states of all the discharge cells become uniform.

Next, a predetermined wall voltage is generated in the selected discharge cells in the address period PA. In more detail, the scan pulses of the scan low voltage Vscl are sequentially applied to the scan electrodes 122_1: 122_m biased with the scan high voltage Vsch, and the address electrodes 131_1: 131_n) is applied with an address signal. The address signal applied to each of the address electrodes 131_1 and 131_n is applied with the address voltage Va when the discharge cell is selected, and with the ground voltage Vg otherwise. Meanwhile, the ground voltage Vg is continuously applied to the sustain electrodes 123_1 and 123_m after the reset period PR. In the selected discharge cells, the address voltage Va applied to the address electrodes 131_1 and 131_n, the scan low voltage Vscl applied to the scan electrodes 122_1 and 122_m, and the scan electrodes 122_1 and 122_m are nearby. The address discharge is performed by the wall voltage due to the accumulated negative charge and the wall voltage due to the positive charge accumulated near the address electrodes 131_1: 131_n. As a result of the address discharge, positive charges are accumulated near the scan electrodes 122_1: 122_m and negative charges are accumulated near the sustain electrodes 123_1: 123_m.

In the sustain period PS, a predetermined sustain pulse is applied to the scan electrodes 122_1: 122_m, whereby discharge cells in which the wall voltage is accumulated cause sustain discharge. That is, the sustain pulses having the positive sustain discharge voltage Vs and the negative sustain discharge voltage (-Vs) are alternately applied to the scan electrodes 122_1 and 122_m, thereby applying the scan electrodes to the wall voltage formed by the address discharge. When the sustain discharge voltage Vs applied to 122_1: 122_m overlaps and the discharge start voltage or more is applied, the discharge is performed. Meanwhile, during the sustain period, a ground voltage Vg is applied to the sustain electrodes 123_1: 123_m and the address electrodes 131_1: 131_n to maintain a ground state.

Accordingly, the plasma display apparatus 100 according to the present invention does not need to be provided with an X circuit board for driving the sustain electrodes 123.

On the other hand, the plasma display device 100 according to the first embodiment of the present invention is preferably a structure that is driven in a single scan method. When addressed by the single scan method, unlike the dual scan method, by implementing the single scan mode by scanning the scan line in a specific direction, it is possible to reduce the development cost of the circuit part required for driving the plasma display device. It is easy to thin by reducing the amount of components.

When driving the address electrodes 131 having lines formed up and down in a single scan method, the address circuit board 153 may be disposed only above or below the address electrode 131. In this case, in order to lower the center of gravity of the entire plasma display apparatus, it is preferable that the address circuit board 153 for driving the address electrodes 131 is disposed under the address electrodes 131, and thus the rear substrate. It is preferable that the vertical circuit support portion 130v of 130 extend downward from the common portion 130a.

Meanwhile, the vertical circuit support 130v of the back substrate 130 may be combined with the pedestal 170 supporting the plasma display panel 100. In this case, the vertical circuit support 130v may be accommodated in the pedestal 170 by the coupling unit 175 to protect the circuit unit 150, and the plasma display panel 100 may be provided without a separate member. This can be supported. In this case, the pedestal 170 may support the horizontal circuit support 130h.

Meanwhile, in the plasma display apparatus 200 according to the second exemplary embodiment of the present invention, as shown in FIGS. 8 to 11, the front substrate 220 is connected to the common part 220a. The vertical side circuit support part 220v extended from the common part 220a to at least one side of an upper side and a lower side is provided.

That is, the electrodes 221, which are in contact with or adjacent to the front substrate 220 to implement an image, are disposed in the vertical direction, and the vertical side disposed on at least one of the upper side and the lower side of the common part 220a. The circuit support part 220v supports the circuit part 250 driving the electrodes 221.

Here, the address electrodes 231 may be formed on the left and right sides of the back substrate 230 in contact with or adjacent to the back substrate 230, and the sustain discharge electrodes 221 may be formed on the rear of the front substrate. have. In this case, the sustain discharge electrodes 221 may include sustain electrodes 223 and scan electrodes 222.

In this case, the circuit part 250 supported by the vertical circuit support part 220v of the front substrate 220 may be a circuit part driving the scan electrodes 222. That is, since all of the sustain electrodes 223 located in the separate discharge cells Ce serve as a common electrode for generating the same voltage at the same time, the driving method is simple, and thus a circuit part for driving the sustain electrodes 223 is provided. The weight becomes small. In contrast, since the timing and magnitude of voltage applied to the scan electrodes 222 are different, the weight of the circuit unit driving the scan electrodes 222 is large. Therefore, the center of gravity of the entire plasma display apparatus 200 can be lowered by supporting the circuit part driving the scan electrodes 222 on the vertical circuit support part 220v.

In this case, the circuit board supported by the vertical circuit support part 220v is preferably a Y circuit board 252Y, an image processing board, a logic control board, and a power supply board. In this case, FIGS. 8 and 10. In an exemplary embodiment, the image processing substrate may include one control substrate 251 that simultaneously serves as a logic control substrate and a power supply substrate, and a Y circuit board 252Y coupled to the control substrate.

The vertical circuit support 220v of the front substrate 220 may be combined with a pedestal 270 that supports the plasma display panel 200. In this case, the vertical circuit supporter 220v may be accommodated in the pedestal 270 by the coupling unit 275 to protect the circuit unit 250, and the plasma display panel 200 without a separate member. This can be supported. In this case, the pedestal 270 may support the horizontal circuit support 220h.

On the other hand, the sustain electrode line is preferably applied to the ground voltage throughout the reset period, the address period and the sustain period. In this case, it is more preferable that the voltage of the sustain electrode lines is applied as the ground voltage, which is omitted in the detailed description thereof as shown in FIG. 7.

In addition, the address electrodes 231 are preferably driven in a single scan method, so that the address circuit unit for driving the address electrodes may be disposed only on one side of the address electrodes, thereby simplifying the structure of the entire plasma display apparatus. In this case, an additional supporting part to support the address circuit part becomes unnecessary.

Here, the front substrate 220, the back substrate 230, the address circuit board 253, the sustain circuit board 252, the address electrodes 231, the sustain discharge electrodes 221, the phosphor layer 238, and the protective film. 227 and the function of the discharge gas have the same function and structure as the address circuit board 153 and the like provided in the plasma display device according to the first embodiment of the present invention.

As described above, according to the present invention, the plasma display apparatus does not include the adhesive member and the heat dissipation sheet interposed between the plasma display panel and the chassis base. Reduction, manufacturing cost and material cost decrease.

In addition, since the glass substrate is directly exposed to air, high temperature heat generated from the glass substrate can be smoothly released to the outside.

Although the present invention has been described with reference to one embodiment shown in the accompanying 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. Could be. Accordingly, the true scope of protection of the invention should be defined only by the appended claims.

Claims (21)

A back substrate having a front substrate, a common portion forming a discharge space between the front substrate, and a vertical circuit support portion extending from the common portion to at least one of an upper side and a lower side, and a plurality of plasma generating generations in the discharge space. A plasma display panel having electrodes of light emitting the visible light to the outside through the front substrate in accordance with the plasma discharge in the discharge space; And And at least one circuit board supported by the vertical circuit support part, the circuit part driving the plasma display panel. The method of claim 1, The electrodes are: Upper and lower address electrodes; And sustain discharge electrodes for generating a plasma discharge together with the address electrodes in a discharge space disposed between the address electrodes. The method of claim 2, The circuit unit includes a sustain circuit board for applying a voltage to the sustain discharge electrodes and an address circuit board for applying a voltage to the address electrodes. And the address circuit board is supported by the vertical circuit support unit. The method of claim 3, wherein Voltage is applied to the electrodes in a single scan method, And the vertical circuit support part is disposed below the common part. The method of claim 1, The sustain discharge electrode includes a sustain electrode and a scan electrode, A voltage is applied to the sustain electrode, the scan electrode, and the address electrodes such that a series of driving cycles consisting of a reset period, an address period, and a sustain period is repeated, and the voltage applied to the sustain electrode through the driving period has a constant magnitude. A plasma display device, characterized in that the constant voltage. The method of claim 5, And the constant voltage applied to the sustain electrode is a ground voltage. The method of claim 1, And the back substrate further comprises a horizontal circuit supporting portion extending from the common portion to at least one side. The method according to any one of claims 1 to 7, And the vertical circuit supporter is coupled to a pedestal that supports the plasma display panel. The method according to any one of claims 1 to 7, And a heat conductive member attached to a rear surface of the rear substrate. The method of claim 9, The thermally conductive member is made of a metal material and in contact with at least a portion of the circuit portion. The method according to any one of claims 1 to 7, The plasma display panel is: Barrier ribs disposed between the front substrate and the rear substrate to define discharge cells together with the front substrate and the rear substrate; Dielectric layers covering the electrodes; A phosphor layer disposed in the discharge cells; And And a discharge gas in the discharge cells. A front substrate having a back substrate, a common portion forming a discharge space between the back substrate and a vertical circuit support portion extending from the common portion to at least one of an upper side and a lower side, a plurality of generating plasma discharge in the discharge space; A plasma display panel including electrodes of the plasma display panel, the plasma display panel emitting visible light to the outside through the front substrate in response to the plasma discharge in the discharge space; And And at least one circuit board supported by the circuit support unit, the circuit unit driving the plasma display panel. The method of claim 12, The electrodes are: Address electrodes extending from side to side; And sustain electrodes and scan electrodes extending upward and downward to intersect the address electrodes to generate plasma discharge. The method of claim 13, The circuit unit includes a sustain circuit board for applying a voltage to at least one of the sustain electrode and the scan electrode, and an address circuit board for applying a voltage to the address electrodes. And the sustain circuit board is supported by the vertical circuit support portion. The method of claim 14, A voltage is applied to the sustain electrode, the scan electrode, and the address electrodes such that a series of driving cycles consisting of a reset period, an address period, and a sustain period is repeated. Constant voltage, And the vertical circuit support portion drives the scan electrode. The method of claim 15, And the constant voltage applied to the sustain electrode is a ground voltage. The method according to any one of claims 12 to 16, And a voltage is applied to the electrodes in a single scan method. The method according to any one of claims 12 to 16, And the vertical circuit supporter is coupled to a pedestal that supports the plasma display panel. The method according to any one of claims 12 to 16, And a heat conductive member attached to a rear surface of the rear substrate. The method of claim 19, The thermally conductive member is made of a metal material and in contact with at least a portion of the circuit portion. The method according to any one of claims 12 to 16, The plasma display panel is: Barrier ribs disposed between the front substrate and the rear substrate to define discharge cells together with the front substrate and the rear substrate; Dielectric layers covering the electrodes; A phosphor layer disposed in the discharge cells; And And a discharge gas in the discharge cells.

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