KR100670467B1 - Plasma Display Device - Google Patents

Abstract

The present invention relates to a plasma display device that can increase the light efficiency, the plasma display device of the present invention includes a panel for emitting visible light by the discharge, the rear of the panel reflects the visible light toward the front of the panel A reflection correction layer for forming is formed.

Calibration Film, PDP, Filter Assembly

Description

Plasma Display Device

Brief Description of the Drawings Fig. 1 is a simplified diagram of a plasma display device according to a first embodiment of the present invention.

Figure 2 is a side view showing a side view of the panel, the reflection correction film and the thermal conductive sheet of Figure 1;

3 is a view showing an example of attachment of the reflection correction film.

4 shows a plasma display device according to a second embodiment of the present invention.

5 is a perspective view showing in more detail the panel structure of FIG.

6A is a view showing a fastening example of a panel, a heat conductive sheet, and an adhesive member in the case of using a planar adhesive sheet.

Figure 6b is a view showing a fastening example of the heat conductive sheet and the adhesive member in the case of using a band-shaped adhesive tape wrapped around the heat conductive sheet.

Figure 6c is a view showing a fastening example in the case of dividing the thermal conductive sheet using a band-shaped adhesive tape.

7 is a view briefly showing a connection relationship between a driving circuit unit for driving a PDP and electrodes of a panel.

<Explanation of symbols for the main parts of the drawings>

2, 22: front case 4, 24, 54, 64, 74: panel

5: reflection correction film 6, 26, 56, 66, 76: heat conductive sheet

8, 28, 58, 68, 78: adhesive member 10, 30: frame

12, 32: printed circuit board 14: rear case

18: non-display area 20: display area

25: reflection compensation layer 40: transparent electrode

41 metal bus electrode 42 upper dielectric layer

43: protective film 44: lower dielectric layer

45: partition wall 46: phosphor layer

80: address driver 81: scan driver

82: sustain drive unit 83: tape carrier package

84: flexible printed circuit (or cable)

85: discharge cell

The present invention relates to a plasma display device, and more particularly, to a plasma display device capable of increasing light efficiency.

Recently, many flat display devices have been developed to replace cathode ray tubes (CRTs). Representative examples of such flat panel displays include liquid crystal displays (LCDs), electro luminescence displays (ELs), field emission displays (FEDs), and plasma display panels. (Or a plasma display device, Plasma Display Panel Device: hereinafter referred to as "PDP").

Among such flat panel displays, the PDP displays an image by plasma discharge, enables complete digital implementation, and has a relatively easy implementation of a large screen compared to other flat panel displays.

Such a PDP is composed of a filter assembly, a panel, a thermally conductive sheet, a frame, a printed circuit board, and various additional devices housed inside the front / rear case.

The case protects internal components from impact and contamination from the outside and prevents internal noise from leaking to the user. The panel is usually composed of an upper / lower substrate where a substantial image is realized, and a plurality of electrodes, barrier ribs, phosphors, and dielectric layers are formed between the upper and lower substrates, and an inert gas is encapsulated. The thermally conductive sheet is formed between the panel and the frame to uniformize the temperature of the PDP panel and at the same time dissipate heat generated from the panel to prevent the panel temperature from rising rapidly. The thermally conductive sheet is fixed to the frame by an adhesive member such as a liquid adhesive or an adhesive tape, or inserted between the panel and the frame when the panel and the frame are fastened.

The frame dissipates some of the heat generated from the panel on the front of the frame and the printed circuit board on the back, and fixes and supports the printed circuit board.

The printed circuit board is divided into several circuit boards, and the circuit boards are divided into driving circuits including a power supply unit, an address driver, a scan driver, and a sustain driver. In particular, a power supply unit, an address driver, a scan driver, and a sustain driver are formed on each circuit board, and each substrate is fixed to the frame at a predetermined distance. Such circuit boards are connected to each other by a conductive member such as a flexible printed cable or a circuit (“FPC”). In particular, the power supply unit includes an AC-DC converter for converting alternating current into direct current, and supplies power for operation of the PDP and power for generating a signal voltage supplied to the panel to the printed circuit board. In addition, the address driver, the scan driver, and the sustain driver generate a drive signal by using the power from the power source, and supply it to the panel by the conductive member.

Meanwhile, a protective glass and a color correction film are inserted between the front case and the panel. The protective glass prevents the color correction film on the panel and the back from being damaged by physical shocks, scratches, etc. applied from the outside. In addition, a color correction film is attached to the rear surface of the protective glass. This color correction film absorbs the white light component of the visible light emitted from the panel to improve the display quality of the PDP.

However, since the color correction film and the protective glass are located in front of the panel, there is a problem in that light efficiency is reduced by reflecting or absorbing some of the light generated from the panel in the panel direction.

Accordingly, it is an object of the present invention to provide a plasma display device capable of increasing light efficiency.

For the above purpose, the plasma display device of the present invention includes a panel that emits visible light by discharge, and a reflection correction layer for reflecting visible light in the front direction of the panel is formed on the rear of the panel. The reflection compensation layer may be formed integrally with the panel. Alternatively, the reflection compensation layer may use a film.

In addition, the plasma display device of the present invention is a printed circuit board installed in the rear direction of the panel, a frame for fixing and supporting the printed circuit board, a thermal conductive sheet and panel inserted between the frame and the panel, the printed circuit board, the frame and the thermal conductivity The case may further include a case for storing the sheet therein.

The panel is formed on an upper substrate, a lower substrate facing the upper substrate, a plurality of upper electrodes formed on the upper substrate substrate surface facing the lower substrate, an upper dielectric layer and an upper dielectric layer formed to cover the upper electrode and the upper substrate surface. A protective film laminated can be provided.

The lower substrate may include a plurality of lower electrodes formed on a surface facing the upper substrate, a lower dielectric layer formed to cover the lower electrode and the lower substrate surface, a partition wall formed on the lower dielectric layer, and a phosphor layer. In this case, the reflection compensation layer may be formed on the lower substrate.

Further, in the panel, a display area for displaying an image by discharge and a non-display area are formed around the display area, and the reflection compensation layer may be formed in the display area. In addition, the reflection compensation layer may be formed on a portion of the non-display area, and an adhesive member may be attached to the remaining portion of the non-display area.

Other features and operations of the present invention in addition to the above-described objects will become apparent from the description of the embodiments with reference to the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 7.

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

Referring to FIG. 1, the plasma display device according to the first embodiment of the present invention includes a front case 2, a rear case 14, a panel 4, a thermal conductive sheet 6, an adhesive member 8, and a frame ( 10), a printed circuit board 12 and a reflection correction film (5).

The front case 2 is fastened to the rear case 14 to protect the inner panel 4, the thermal conductive sheet 6, the printed circuit board 12 and the frame 10 from external contaminants and various impacts. Therefore, noise and vibration generated when the PDP is driven are prevented from being transmitted to the user. Here, when the ear portion for fixing to the frame 10 is formed, the front case 2 is fastened to the ear portion of the frame 10 is inserted between the front case 2 and the frame 10 of the thermal conductive sheet (6) The adhesive member 8, the panel 4 and the reflection correction film 5 are more firmly fixed. The front case 2 is formed with a light transmitting portion so that light from the panel 4 can be emitted to the outside.

The rear case 14 is fastened to the front case 2 to protect the internal components from external contamination and impact. In addition, the rear case 14 is formed with a plurality of discharge holes for discharging the heat inside. In addition, it can be used as a ground source of the driving circuit formed on the printed circuit board 12.

The panel 4 is formed between the upper substrate 4a on which the plurality of scan electrodes and the sustain electrodes are formed, and the plurality of address electrodes and the upper substrate 4a formed in the direction crossing the electrodes of the upper substrate 4a. And a lower substrate 4b including a phosphor layer. In addition, a partition wall is formed between the upper substrate 4a and the lower substrate 4b to partition the discharge cells. In addition, an inert gas such as Ne, Xe, He, Ar, or a mixed gas of one or more thereof is filled between the upper substrate 4a and the lower substrate 4b. The panel 94 generates visible light by exciting the phosphor by ultraviolet rays generated by the discharge between the scan electrodes and the sustain electrodes, and controls the amount of visible light to display a predetermined image. In addition, an upper dielectric layer and a passivation layer are further formed on the upper substrate 4a, and a lower dielectric layer is further formed on the lower substrate 4b.

The reflection correction film 5 returns the light wasted in the back direction of the panel 4 when the PDP is driven to the front direction of the PDP, that is, the user direction, to increase the amount of light used, and to increase the amount of light generated by the panel 4. It absorbs some of the white ray to improve the light quality. To this end, the reflection correction film 5 is inserted between the panel 4 and the thermal conductive sheet 6 or the adhesive member 8. As described above, in the plasma display device of the present invention, it is possible to omit the correction film inserted into the front surface of the panel 4 by inserting the reflection correction film 5 into the rear portion of the panel 4. Here, by using the reflection compensation film 5, it is possible to remove the protective glass for protecting and attaching the correction film in the front case (2). In addition, unlike the conventional correction film 5, the light emitted in the rear direction of the panel 4 is returned to the front direction to reduce the waste of light. In addition, the reflection correction film 5 of the present invention does not reduce the reflection and correction efficiency by using a material having good thermal conductivity so that heat generated from the panel 4 can be smoothly transferred to the thermal conductive sheet 6. It should be made as thin as possible in the range.

The thermally conductive sheet 6 is inserted between the panel 4 and the frame to transfer heat generated from the panel 4 to the frame 10 when the plasma display device is driven, and to radiate heat to increase the temperature of the panel 4. Prevents a sharp rise. In addition, the thermally conductive sheet 6 evenly distributes the temperature distribution of the non-uniform panel 4 to prevent breakage and malfunction due to local temperature difference of the panel 4. To this end, the thermal conductive sheet 6 is inserted between the reflection compensation film 5 and the frame 10.

The adhesive member 8 fixes the thermal conductive sheet 6 or panel 4 to the frame 10. To this end, the adhesive member 8 is formed in the form of a strip or frame in the edge portion of the thermal conductive sheet 6 as shown in Figure 1, to fix the thermal conductive sheet 6 or panel 4 to the frame 10 do. As the adhesive member 8, an adhesive, an adhesive sheet, and an adhesive tape are used. Here, when using a plastic frame, each adhesive member 8 is attached at a predetermined distance when the adhesive member 8 is attached. This is to enable air distribution to the heat conductive sheet 6 so that heat transferred from the panel 4 to the heat conductive sheet 6 can be radiated. Here, when the frame 10 is made of a metal-based material, the shape, thickness, and attachment method of the adhesive member 8 may be changed such that the thermal conductive sheet 6 and the frame 10 are in close contact with each other.

The frame 10 fixes the panel 4 or the thermal conductive sheet 6 by the adhesive member 8, and also the panel 4, the tape carrier package (hereinafter referred to as "TCP") and printing. The heat from the circuit board 12 is dissipated. The frame 10 supports and fixes the printed circuit board 12 by fastening means including a boss and a screw. Here, the frame 10 may use not only metal-based materials but also plastic-based materials. However, since the heat dissipation efficiency of the frame 10 using the plastic-based material is much lower than that of the metal-based frame 10, the panel 4 is formed by the heat conductive sheet 6 at a predetermined distance from the heat conductive sheet 6. Allow heat to dissipate. In addition, the metal frame 10 may be used as a ground power source of the printed circuit board 10.

The printed circuit board 12 is formed with a system circuit portion for driving the PDP. The system circuit portion is provided with a power supply for power supply, an address driver for supplying a drive signal to the electrodes of the panel 4, a scan driver and a sustain driver. The printed circuit board 12 includes a power supply substrate on which a power supply is formed, a scan driver substrate on which a scan driver is formed, a sustain driver substrate on which a sustain driver is formed, a part of an address driver, and logic for forming a control circuit such as a timing controller. It includes a substrate. In addition, a driving buffer board is provided between the panel 4 and each driving unit substrate, and a driving signal from each driving unit is provided to the panel 4 via this driving buffer board. Here, the scan driver and the sustain driver may be provided in an integrated board form. In this case, unlike the case in which the scan driver and the sustain driver are formed on separate substrates, one drive buffer board is shared. In addition, the address driver, the scan driver and the sustain driver are connected to the electrodes by FPC or TCP in which the driving chip is mounted.

FIG. 2 is a side view showing the panel, the reflection correction film, and the thermal conductive sheet of FIG. 1 as viewed from the side. FIG. In addition, FIG. 2 briefly illustrates the progress of visible light generated in the discharge cell.

In the PDP according to the present invention, the reflection correction film 5 is inserted between the panel 4 and the thermal conductive sheet 6. When the PDP attached to the back surface of the panel 4 is driven by the reflection correction film 5 and discharge occurs in the discharge space 16, red (R), green (G), and blue (B) visible light (A). This occurs and is radiated to the user side through the front panel 4a. In addition, visible light B is also emitted through the rear panel 4b. At this time, the light emitted through the rear panel 4b is reflected back to the front panel 4a by the reflection compensation film 5. In this case, the visible light B reflected to the front surface by the reflection compensation film 5 is partially reflected by the light of the White Ray series, which causes the display quality degradation, to be reflected.

Through this, conventionally, the light emitted and lost in the rear direction of the panel 4 is reused by the reflection compensation film 5, thereby increasing the light efficiency. In addition, conventionally, since the correction film and the protective glass on the front of the panel 4 are removed, the light efficiency deterioration due to absorption and reflection of light emitted to the front of the panel 4 during discharge is improved. In addition, in the case of the visible light emitted directly in the front direction of the panel 4, since correction is not made, it may be improved by attaching a correction film to the front of the front panel 4a.

FIG. 3 is a view illustrating an example of attaching a reflection compensation film and briefly showing one side edge of the panel.

Referring to FIG. 3, the panel 4 is provided as an extra space for the purpose of preparing a space for forming a pad for connecting the TCP, etc., fixing the panel 4, and the like, with the display area 20 where the image is actually displayed. It is divided into the non-display area 18. In addition, in the case of the front panel 4a and the rear panel 4b, panels having different sizes of upper and lower sides and left and right portions of the panel 4 are mainly used for the purpose of connecting TCP and FPC. In more detail, in the case of the front panel 4a, the panel may be manufactured using a substrate having a longer vertical length than the rear panel 4b, and the rear panel 4b using a substrate having a longer horizontal length than the front panel 4a. The panel 4 is manufactured by using the substrate opposite thereto.

The reflection compensation film 5 of the PDP according to the first embodiment of the present invention is attached to cover the entire portion of the display area 20 on the rear surface of the panel 4. At this time, the edge portion of the reflection compensation film 5 is extended to cover a portion of the non-display area 18 can obtain a good correction and reflection effect.

In this way, when the reflection compensation film 5 is attached to cover the portion of the display area 20 and the non-display area 18, the adhesive member 8 is attached to the remaining portion of the non-display area 18. The reason why the adhesive member 8 is attached to the remaining portion of the non-display area 18 is that the reflection correction film 5 has a thin thickness as much as possible so that the heat of the panel 4 can be transferred to the thermal conductive sheet 6 well. It is made to have, because the adhesive strength of the reflection correction film 5 is also not large. For this reason, when the adhesive member 8 is attached to the rear surface of the reflection compensation film 5, the components supported by the adhesive member 8 and the adhesive member 8 are easily separated from the panel 4. Since it occurs, the adhesive member 8 is preferably formed in a portion where the reflection correction film 5 is not attached.

4 is a diagram illustrating a plasma display device according to a second embodiment of the present invention. In describing the second embodiment of the present invention, a description of the same configuration as that of the first embodiment will be omitted.

5 is a perspective view showing the panel structure of FIG. 4 in more detail, showing one discharge cell.

4 and 5, the plasma display device according to the second embodiment of the present invention includes a front case 22, a rear case 34, a thermal conductive sheet 26, an adhesive member 28, and a frame 30. And a printed circuit board 32 and a panel 24.

The panel 24 of the plasma display device according to the second embodiment of the present invention includes an upper substrate 24a, a lower substrate 24b, upper electrodes 40 and 41, an upper dielectric layer 42, a protective film 43, and a lower portion. An electrode X, a lower dielectric layer 44, a partition wall 45, a phosphor layer 46, and a reflection compensation layer 25 are provided.

The reflection compensation layer 25 reduces and removes white light included in the visible light emitted in the direction of the lower substrate 24b among the visible light generated by the plasma discharge, and reflects the light in the direction of the upper substrate 24a, thereby improving the quality and use of the light. Increase the efficiency. To this end, the reflection compensation layer 25 is formed on the rear surface of the lower substrate 24b. Here, the reflection compensation layer 25 may be formed by dividing the color correction layer for correction and the reflection layer for reflecting visible light and stacked on the color correction layer.

The upper electrodes 40 and 41 are formed on the substrate surface of the upper substrate 24a facing the lower substrate 24b and include a scan electrode Y and a sustain electrode Z. In addition, the lower electrode 24b is formed to intersect the upper electrodes 40 and 41 on the substrate surface of the lower substrate 24b facing the upper substrate 24a and includes an address electrode X. Each of the upper electrodes, that is, the scan electrode Y and the sustain electrode Z, has a line width smaller than that of the transparent electrodes 40Y and 40Z and the transparent electrodes 40Y and 40Z, and is formed on one side of the transparent electrode. Electrodes 41Y and 41Z.

The transparent electrodes 40Y and 40Z are usually made of metal such as indium tin oxide (ITO), indium zinc oxide (IZO), and indium tin zinc oxide (ITZO). It is formed on 4a). The metal bus electrodes 41Y and 41Z are formed of a metal such as chromium (Cr) on the transparent electrodes 40Y and 40Z, thereby reducing the voltage drop caused by the transparent electrodes 40Y and 40Z having high resistance. The upper dielectric layer 42 and the passivation layer 43 are stacked on the upper substrate 24a on which the scan electrode Y and the sustain electrode Z are arranged side by side.

The passivation layer 43 prevents damage to the upper dielectric layer 42 due to sputtering generated during plasma discharge, and increases emission efficiency of secondary electrons. As the protective film 42, magnesium oxide (MgO) is mainly used.

The lower dielectric layer 44, the partition wall 45, the phosphor layer 46, and the reflection compensation layer 25 are formed on the lower substrate 24b on which the address electrode X is formed. The lower dielectric layer 44 is formed to cover the address electrode X and the lower substrate 24b. A partition wall 45 is formed on the lower dielectric layer 44, and a portion of the partition wall 45 and the lower dielectric layer 44 are formed. Phosphor layer 46 is applied to cover.

In the upper dielectric layer 42, the lower dielectric layer 44, and the passivation layer 43, wall charges formed by discharge are accumulated to lower the discharge voltage applied from the outside.

The partition wall 45 provides a discharge space together with the upper and lower substrates 24a and 24b, and partitions the discharge space between the discharge cells so that ultraviolet rays and visible rays generated by the gas discharge leak into adjacent discharge cells. prevent. Here, the partition wall 45 may have various shapes such as a stripe type, a closed type (or a well type), a fish bone type, and the like. In the case of the stripe type, barrier ribs are formed only in a direction parallel to one of the upper electrodes 40 and 41 or the lower electrode X. The closed or fish-type barrier ribs include all of the longitudinal barrier ribs. The discharge space is further carefully partitioned.

In the discharge space provided by the upper / lower substrates 24a and 24b and the partition wall 45, an inert gas such as He, Ne, Ar, Xe, Kr for gas discharge, and a discharge gas (or a mixed gas) in which these are combined Or an excimer gas capable of generating ultraviolet rays by the discharge.

The phosphor layer 46 is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red (R), green (G), and blue (B).

In the plasma display device according to the second embodiment of the present invention, as described with reference to FIG. 3, it is preferable to form the reflection compensation layer 25 to cover the entire display area and the part of the non-display area. This is to reduce the material of the reflection compensation layer 25 and to maintain the adhesive strength by the adhesive member 8, the portion where the adhesive member 8 is attached is preferably not to form the reflection compensation layer 25. .

6 is a view showing a panel, a thermal conductive sheet and an adhesive member, Figure 6a when using a planar adhesive sheet, Figure 6b is a band-shaped adhesive tape surrounding the periphery of the thermal conductive sheet, Figure 6c is a band-shaped adhesive It is a figure which shows the fastening example at the time of dividing a heat conductive sheet using a tape.

In the case of using the adhesive sheet as shown in FIG. 6A, the panel 54, the thermal conductive sheet 56, and the adhesive sheet 58 are sequentially stacked and assembled. In this case, since the heat generated from the panel 54 is transferred to the frame through the heat conductive sheet 56 and the adhesive sheet 58, the thickness of the adhesive sheet 58 should be made very thin in consideration of the heat transfer efficiency. There is a problem that the heat retention effect due to (58) rises, and the temperature of the panel 54 rises.

To improve this, the size of the heat conductive sheet 66 is limited and the heat conductive sheet 66 is attached so that the heat conductive sheet 66 is attached only to a portion which does not significantly deviate from the display area of the panel 64 as shown in FIG. 6B. The adhesive tape 68 is attached to the back of the panel 64 which is not used. Such a method has the advantage that the gap between the panel 64 and the frame can be easily adjusted by adjusting the thickness of the adhesive tape 68, and maintaining the thermal conductivity and heat dissipation efficiency of the thermal conductive sheet 66 as compared to FIG. 6A. The temperature distribution of (64) is evened out or it becomes easy to radiate heat.

FIG. 6C is another example of FIG. 6B which is mainly used for a large area PDP. The difference from the method described with reference to FIG. 6B is that more than one line of adhesive tape 78 is formed at the center portion. That is, the thermal conductive sheet 76 is formed into two or more pieces, and the adhesive tape 78 is attached between the pieces of the thermal conductive sheet 76. This has the advantage that the fixing strength of the panel 74 and the frame of the rear surface can be secured even in a large area PDP.

FIG. 7 is a diagram briefly illustrating a connection relationship between a driving circuit unit for driving a PDP and electrodes of a panel, and is divided into a scan driver and a sustain driver.

Referring to FIG. 7, in the panel 4, the discharge cells 85 in which the plasma discharge is generated may include scan electrode lines Y1 to Yn, sustain electrode lines Z1 to Zn, and address electrode lines (or data electrode lines). , X1 to Xm).

The scan electrode lines Y1 to Yn supply the scan pulses and the sustain pulses from the scan driver 81 to the discharge cells 85 so that the discharge cells 85 are scanned in units of lines and discharge cells. Discharge is maintained in the field 85.

The sustain electrode lines Z1 to Zn supply the sustain pulses from the sustain driver 82 to all the sustain electrodes in common, so that discharge is maintained in the discharge cells 85 together with the scan electrode lines Y1 to Yn. To be. The address electrode lines X1 to Xm supply the data pulses from the address driver 80 synchronized with the scan pulses to the line unit panel 4 to discharge the discharge cells 85 in which the discharges are to be maintained in accordance with the logic value of the data pulses. ) Is selected.

The address driver 80, the scan driver 81, and the sustain driver 82 are connected to a TCP 83 or a flexible printed cable (or flexible flat cable (FFC, 84)) to be connected to the electrodes. Is connected by. Particularly, some of the driving circuits having a high degree of integration among the driving circuits, that is, the address driver, connect the electrodes and the driving unit by using a chip on film type TCP in which some driving chips are mounted on the cable.

To this end, a plurality of pads for connection with cables are formed in the non-display area of the panel 4 and these pads are connected to the electrodes of the display area by a link.

Each driver receives data from a timing controller (not shown), and supplies each unique signal to the electrodes by a control signal provided therewith.

As described above, the plasma display device according to the present invention forms a reflection correction film or a reflection correction layer on the rear surface of the panel. Through this, the plasma display device according to the present invention can omit the protective glass or the color correction filter configured in the front case. Accordingly, the plasma display device of the present invention can reduce the manufacturing cost by eliminating the protective glass assembly step.

In addition, the plasma display apparatus of the present invention has the advantage of increasing the amount of light by returning the light wasted in the rear direction of the panel to the front direction, and also improve the display quality by removing the white light.

Claims (9)

And a panel which emits visible light to the front side by discharge, And a reflection compensation layer formed on a rear surface of the panel to reflect the visible light toward the front of the panel and to correct the color of the visible light. The method of claim 1, The reflection compensation layer is a color correction layer for absorbing the white light of the visible light to correct the color of the visible light, and And a reflective layer reflecting the visible light. The method of claim 1, The reflection compensation layer is a plasma display device, characterized in that the film. The method of claim 1, A printed circuit board installed in a rear direction of the panel; A frame for fixing and supporting the printed circuit board; A thermally conductive sheet inserted between the frame and the panel; And a case accommodating the panel, the printed circuit board, the frame, and the thermal conductive sheet therein. The method of claim 1, The panel, Upper substrate, A lower substrate facing the upper substrate; A plurality of upper electrodes formed on a surface of the upper substrate facing the lower substrate; An upper dielectric layer formed to cover the upper electrode and the upper substrate surface; And a protective film stacked on the upper dielectric layer. The method of claim 5, The lower substrate, A plurality of lower electrodes formed on the front surface facing the upper substrate; A lower dielectric layer formed to cover the lower electrode and the lower substrate surface; And a barrier rib and a phosphor layer formed on the lower dielectric layer. The method of claim 6, And the reflection compensation layer is formed on a rear surface of the lower substrate. The method of claim 7, wherein The panel includes a display area for displaying an image by discharge; A non-display area is formed around the display area. And the reflection compensation layer is formed in the display area. The method of claim 8, The reflection compensation layer is formed on a portion of the non-display area, And an adhesive member attached to the remaining portion of the non-display area.

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