JP5028318B2 - Plasma display panel and plasma display device - Google Patents

Description

  The present invention relates to a plasma display panel (hereinafter also referred to as “plasma panel”) used in a flat-screen television or the like and a plasma display device using the same (hereinafter also referred to as “plasma display”), and more particularly to a box-type partition wall. The present invention relates to a plasma panel including a discharge cell composed of (rib) and a plasma display using the plasma panel.

  As a thin flat display, a plasma display is increasing in brightness and contrast for improving image quality. Compared with the liquid crystal displays that divide the market as thin flat displays, plasma displays have almost the same brightness and superior dark contrast. However, in a bright place contrast that is important for image quality in a bright room such as a living room, the liquid crystal display has a polarizing filter and employs a color filter, so reflection of outside light is very small, and deterioration of contrast is small. For this reason, since the plasma display has a large reflection of external light, the contrast in the bright place is greatly degraded, and the image quality in the bright room is inferior to the liquid crystal display.

Japanese Patent Laid-Open No. 2003-100222 (Patent Document 1) discloses that when external light incident on a discharge cell from the outside of a plasma display panel is reflected in the discharge cell when viewed from the vertical direction of the panel, A technique for providing a light blocking body in a region where the intensity of reflected light is high is disclosed.
JP 2003-100222 A

  In order to improve the image quality, it is necessary to improve the bright place contrast. In order to improve the bright place contrast, there are two methods of improving luminance and reducing reflection of external light.

  There are two methods for improving the brightness. One is a method of increasing the input power, but this leads to a significant increase in power consumption. Second, there is a method for improving the light emission efficiency, but it is difficult to greatly improve the conversion efficiency between power and ultraviolet light by the sealed gas in the panel and the conversion efficiency between ultraviolet light and visible light by the phosphor.

  For this reason, it is very difficult to improve luminance, and it is considered effective to reduce reflection of external light. To reduce external light reflection, there is a method of reducing the transmittance of a filter in front of the plasma panel. However, this has a problem that the light emitted from the plasma panel is also reduced and the luminance is deteriorated.

  Therefore, it is necessary to reduce the external light reflection of the plasma panel regardless of the transmittance of the filter.

  An object of the present invention is to improve a bright place contrast in a plasma display.

  The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

  Of the inventions disclosed in the present application, the outline of typical ones will be briefly described as follows.

  In one embodiment of the present invention, a discharge cell constituting the plasma panel includes a discharge space between a front plate and a back plate facing the discharge cell and surrounded by a box-type barrier rib provided on the back plate. And a discharge gas filling the discharge space, and a phosphor layer provided on the back plate so as to be in contact with the discharge space. The sustain electrode pair extending in the first direction so as to cross the discharge space in plan view is configured by overlapping a transparent electrode and a bus electrode having a width smaller than that of the transparent electrode. In both the electrodes of the sustain electrode pair, the central axis of the bus electrode is located on one end side of the address electrode extending in the second direction from the central axis of the transparent electrode in the second direction intersecting the first direction. .

  Among the inventions disclosed in the present application, effects obtained by typical ones will be briefly described as follows.

  According to this embodiment, it is possible to improve the bright place contrast in the plasma display.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiments, and the repetitive description thereof may be omitted. In the drawings for explaining the following embodiments, hatching may be given even in plan views for easy understanding of the configuration.

  In this application, the “front plate” and the “back plate” are those that do not become the front plate or display surface when passing through the light emitted from the phosphor from the discharge space and becoming the display surface when assembled into a panel. Is the back plate.

  In general, plasma panels and plasma displays are used indoors where lighting is installed on the ceiling, and the panel surface is installed in parallel with the vertical direction from the floor. Will see. For this reason, in the present application, the “upper end” of the plasma panel is on the ceiling side, and the “lower end” of the plasma panel is on the floor side.

(Embodiment 1)
FIG. 1 is a perspective view schematically showing the main part of the plasma panel PDP 1 in the present embodiment, and the front plate is shown separated from the back plate for easy understanding of the structure. FIG. 2 is a plan view schematically showing the plasma panel PDP1 of FIG. 1, and a part thereof is omitted. 3 is a cross-sectional view schematically showing the plasma panel PDP1 of FIG. 1, and shows a cross section taken along the line XX ′ of FIG. In the drawing, a horizontal direction a, a vertical direction b, and a thickness direction c of the plasma panel PDP1 are shown. The panel surface is installed in the vertical direction b (vertical direction) from the floor, and the observer views the display of the plasma panel PDP1 in the thickness direction c (horizontal direction).

  The plasma panel PDP1 in the present embodiment has a front plate having a plurality of sustain electrode pairs 16 extending in the horizontal direction a and a plurality of address electrodes 9 extending in the vertical direction b intersecting the horizontal direction a. The face plate faces each other, and has a plurality of discharge cells CL provided at respective positions where the plurality of sustain electrode pairs 16 and the plurality of address electrodes 9 intersect.

  The front plate constituting the plasma panel PDP1 is provided on the front substrate 1, the front substrate 1, the sustain electrodes 16A and 16B including the bus electrode 2 and the transparent electrode 3, and the dielectric covering the sustain electrodes 16A and 16B. It has a layer 4 and a protective film 5 provided on the dielectric layer 4 and emitting priming particles when irradiated with ultraviolet rays. The sustain electrode pair 16 includes a sustain electrode 16A and a sustain electrode 16B.

  The front substrate 1 is made of a glass substrate having a predetermined transmittance, for example. The transparent electrode 3 is made of, for example, an indium tin oxide (ITO) film that is a transparent conductor. The bus electrode 2 is made of, for example, a silver (Ag) single layer film which is a non-transparent conductor, and is provided with a width narrower than the width of the transparent electrode 3 in the vertical direction b. The transparent electrode 3 may be composed of tin oxide or zinc oxide, and the bus electrode 2 may be composed of an aluminum single layer film or a chromium / copper / chromium laminated film.

  The dielectric layer 4 is made of a dielectric glass film having visible light transmission and ultraviolet transmission. The protective film 5 is made of a metal oxide material containing MgO (magnesium oxide) that is highly resistant to plasma damage. In addition, since the protective film 5 emits electrons serving as priming particles when irradiated with ultraviolet rays, it is preferable to have a level due to impurities or defects in the band gap.

  The back plate constituting the plasma panel PDP1 is provided on the back substrate 6, the address electrode 9 provided on the back substrate 6, the dielectric layer 8 covering the address electrode 9, and the dielectric layer 8. It has a box-type barrier rib 7 and a phosphor layer 10 provided on the dielectric layer 8 so as to be in contact with the discharge space 15.

The back substrate 6 is made of a glass substrate having a predetermined transmittance, for example. The address electrode 9 is made of, for example, an aluminum single layer film or a chromium / copper / chromium laminated film. The dielectric layer 8 is formed of a dielectric glass film having a high ultraviolet transmittance, and the partition wall 7 is formed of a glass material that does not transmit ultraviolet rays. The phosphor layer 10 is made of a phosphor in which red is (Y, Gd) BO ₄ : Eu ²⁺ , blue is BaMgAl ₁₀ O ₁₇ : Eu ²⁺ , and green is Zn ₂ SiO ₄ : Mn ²⁺ . The partition wall 7 is formed by, for example, a sandblasting method. Specifically, after a glass material is pasted on the dielectric layer 8 (back substrate 6), an abrasive such as alumina is sprayed at a high pressure using a mask. As shown in FIG. 3, the cross section has a forward tapered shape.

  In such a structure, one discharge cell CL includes a discharge space 15 between a front plate and a back plate facing the discharge cell 15 surrounded by a box-type barrier rib 7 provided on the back plate, and a discharge space 15. And a phosphor layer 10 composed of phosphors that emit light in red (R), green (G), and blue (B) colors. In the discharge space 15, a mixed gas using, for example, neon (Ne) -xenon (Xe) as a gas base as a discharge gas is sealed at a predetermined pressure and partial pressure. Note that the front plate and the back plate are sealed with a sealing agent in a region where there is no discharge cell CL (non-display region).

  When the configuration of the plasma panel PDP1 is outlined, the bus electrode 2, the transparent electrode 3, the dielectric layer 4, and the protective film 5 constituting the sustain electrode 16A are sequentially arranged on the front substrate 1. On the other hand, an address electrode 9 and a dielectric layer 8 are arranged on the back substrate 6 so as to cover it. Moreover, the phosphor layer 10 and the phosphor layer 10 between the adjacent barrier ribs 7 are disposed on the dielectric layer 8 so as to surround each discharge cell CL. By disposing the front substrate 1 and the back substrate 6 so as to face each other, a discharge space 15 is formed between the front plate and the back plate, thereby forming a plasma panel PDP1.

  Further, in the plasma panel PDP1, as shown in FIG. 2, the sustain electrode 16A extending in the lateral direction a so as to cross the discharge space 15 in plan view includes the transparent electrode 3 extending in the lateral direction a, and the transparent electrode The bus electrode 2 having a width smaller than 3 and extending in the lateral direction a is overlapped, and both the sustain electrode 16A and the sustain electrode 16B have one end side of the address electrode 9 (see FIG. Lower side, X ′ side).

  The image display on the plasma panel PDP1 generates a discharge in the discharge space 15 for each discharge cell CL, converts it into ultraviolet light by a discharge gas (rare gas) filled in the discharge space 15, and further converts the ultraviolet light into fluorescence. This is done by converting it into visible light by the phosphor of the body layer 10. There are two discharges for displaying an image, and there are an address discharge that determines ON / OFF of light emission of each discharge cell CL and a sustain discharge that determines the brightness of each discharge cell CL. In this sustain discharge, a voltage is supplied so that two sustain electrodes 16A and 16B (ie, sustain electrode pairs 16) arranged vertically in each discharge cell CL alternately become an anode and a cathode, and the discharge is continued. Let

  Here, the items examined in configuring the plasma panel PDP1 shown in the present embodiment will be described. FIG. 4 is a plan view schematically showing the plasma panel PDP0 studied by the present inventors, and a part thereof is omitted. FIG. 5 is a cross-sectional view schematically showing a plasma panel PDP0 examined by the present inventors, and shows a cross section taken along line X-X ′ of FIG. FIG. 6 is a distribution diagram showing the reflection intensity from the phosphor layer 10 by external light irradiation.

  As shown in FIGS. 4 and 5, the sustain electrode 16A and the sustain electrode 16B are arranged so as to be symmetrical with respect to the central axis 11 in the horizontal direction a in the discharge cell CL because the cathode and the anode are alternately switched with each other. is doing. For this reason, the bus electrodes 2 and the transparent electrodes 3 constituting the sustain electrodes 16A and 16B are also arranged symmetrically with respect to the central axis 11 in the horizontal direction a of the discharge cell CL.

  In addition, when the cathode is, for example, the sustain electrode 16A, the sustain discharge is generated on the sustain electrode 16B side. Therefore, the transparent electrode 3 is closer to the central axis 11 in the lateral direction a of the discharge cell CL, and the bus electrode 2 is closer to the far side. Is arranged. Therefore, the central axis 12A in the lateral direction a of the upper end side bus electrode 2A is on the upper end (X) side with respect to the central axis 13A in the lateral direction a of the upper end side transparent electrode 3A, and the center in the lateral direction a of the lower end side bus electrode 2B. The shaft 12B is disposed on the lower end (X ′) side with respect to the central axis 13B in the lateral direction a of the lower end side transparent electrode 3B.

  In addition, in order to improve the bright place contrast, it is necessary to reduce the reflection of outside light. External light passes through the front substrate 1, is reflected by the barrier ribs 7 of the rear substrate 6 and the phosphor layer 10 provided so as to be surrounded by the barrier ribs 7, and is again emitted through the front substrate 1. Regarding the reflection of the rear substrate 6, the phosphor layer 10 has a larger area and a higher reflectance than the partition wall 7, and thus the reflected light from the phosphor layer 10 contributes greatly to the reflected light of the outside light. Further, the bus electrode 2 is very small in both reflectance and transmittance, and shields light.

  Generally, the plasma display is used indoors, and the panel surface is set up vertically, and the observer looks at the panel in the horizontal direction. Furthermore, since the lighting is installed on the ceiling indoors, the external light incident on the plasma panel is not the same as the measurement of external light reflection recommended by JEITA's EIAJ ED-2710A (color plasma display module measurement method). The incident light is incident at an angle of 45 degrees or more with respect to the horizontal direction where the observer looks at the panel.

  As a method for suppressing external light reflection, there is a technique described in Japanese Patent Laid-Open No. 2003-100222 (Patent Document 1). This technique relates to a structure in which cells in the horizontal direction (lateral direction) are separated by barrier ribs extending in the vertical direction (longitudinal direction), that is, a discharge cell composed of stripe-type barrier ribs. For this reason, since no partition is provided in the vertical direction of the cell, it is described that the intensity of external light reflection is maximum at the vertical center of the light shielding layer and the light shielding layer. For this reason, a light shielding layer extending in the horizontal direction is provided between the sustain electrode pair and the adjacent sustain electrode pair, and in the sustain electrode pair, the bus electrode in the transparent electrode is close to the vertical center of the light shielding layer and the light shielding layer. However, it is arranged.

  Differences from the above-mentioned Patent Document 1 will be described. In the present embodiment, the structure of the barrier ribs 7 is not a stripe type, but can increase the surface area of the phosphor layer 10 and suppress external light, so that the periphery of the discharge cell CL is surrounded by the barrier ribs 7, that is, a box type. is there. The reflection intensity from the phosphor layer 10 by external light irradiation is considered to be different between the box type and the stripe type.

  FIG. 6 is a distribution diagram showing the reflection intensity from the phosphor layer by external light irradiation, comparing the box type and the stripe type. Note that the measurement in the box type will be described with reference to FIG. 3 in the state where the external light 14 is not present in the front plate, that is, the front substrate 1, the bus electrode 2, the transparent electrode 3, the dielectric layer 4, and the protective film 5. In this state, irradiation is performed at an angle of 45 degrees from the lateral direction a to the upper end side. The stripe type measurement is performed under the box type measurement conditions without the partition wall 7 shown in FIG.

  As shown in FIG. 6, in the box type, it can be seen that the upper end side of the discharge cell CL has a very small strength up to the enclosure C1, increases toward the lower end side, and further increases from the enclosure C2. As shown in FIG. 3, the external light 14 is not irradiated to the phosphor layer 10 by the upper partition wall 7 until the enclosure C1, and the external light 14 is transmitted from the enclosure C2 to the phosphor layer 7 by the lower partition wall 7. It is thought that the irradiation dose from 10 increases. This box type is greatly different from the structure in which horizontal cells are separated by partition walls extending in the vertical direction, that is, the intensity distribution of external light reflection in the stripe type.

  Also in the PDP 1 in the present embodiment shown in FIG. 3, when the external light 14 is incident on the cell from the upper end side at an angle of 45 degrees or more, the light passing through the front substrate 1 is emitted from the phosphor layer 10 in the cell. Light that diffusely reflects, passes through the front substrate 1 again, and is not shielded by the bus electrode 2 is observed as reflected light of outside light. However, since the external light 14 is incident on the cell from the upper side at an angle of 45 degrees or more, the light reaches the phosphor layer 10 in the cell on the upper end side, behind the partition wall 7 provided in the lateral direction a. do not do. Therefore, external light reflection is very dark at the top of the cell as seen by the observer.

  In the structure of the PDP 0 studied by the present inventors, the upper end side bus electrode 2A is arranged on the upper end side that is far from the central axis 11 in the lateral direction a of the discharge cell CL. For this reason, the lower end side bus electrode 2B blocks the external light reflected by the phosphor layer 10, but the upper end side bus electrode 2A is behind the partition wall 7 and is in a position where the external light is not reflected by the phosphor layer 10. Therefore, it is considered that it does not contribute to shielding external light reflected by the fluorescent film.

  Therefore, in the PDP 1 in the present embodiment, in the sustain electrode 16A provided on the upper end side, the central axis 12A in the lateral direction a of the upper end side bus electrode 2A is lower than the central axis 13A in the lateral direction a of the upper end side transparent electrode 3A. Further, with respect to the lower end side bus electrode 2B, the center axis 12B in the lateral direction a of the lower end side bus electrode 2B is located below the central axis 13B in the lateral direction a of the lower end side transparent electrode 3B. It is.

  Further, as shown in FIG. 3, the upper end side bus electrode 2A can be provided at a position where the external light 14 is reflected by the phosphor layer 10. Therefore, in the structure of the plasma panel PDP0 examined by the present inventors, the upper end side bus electrode 2A that does not contribute to shielding the external light 14 reflected by the phosphor layer 10 has the structure shown in the present embodiment. Thus, the external light reflected by the phosphor layer 10 can be shielded. Furthermore, the lower-end bus electrode 2B can also be arranged at a place where the intensity of the reflected light of the external light 14 is the highest, thereby reducing the amount of external light reflection. Therefore, by using the structure shown in this embodiment mode, it is possible to reduce the amount of light that the external light 14 reflects from the panel when viewed from the whole panel.

  In the structure shown in the present embodiment, there is no change in the area of the sustain electrode pair 16 in the cell that determines the strength of the sustain discharge. Further, since the phosphor emission intensity due to the sustain discharge in the cell is almost uniform except for the vicinity of the partition wall 7, the light shielding amount of the phosphor emission due to the position of the bus electrode 2 does not change. Therefore, regarding the light emission of the cell by the sustain discharge that determines the luminance of the image, even the structure of the plasma panel PDP1 has a light emission amount equivalent to the structure of the plasma panel PDP0, and there is no deterioration in the luminance of the screen.

  In this manner, with the structure described in this embodiment, reflection of the external light 14 can be reduced and there is no change in luminance. Therefore, the bright place contrast can be improved, and the image quality can be improved.

  Specifically, in the plasma panel PDP1 in the present embodiment, each cell has a structure surrounded by the partition walls 7, and a pair of sustain electrodes are arranged at intervals of 50 to 200 μm therein. The width b in the vertical direction b of the transparent electrode 3 constituting each sustain electrode 16A and sustain electrode 16B is 50 to 250 μm, and the bus electrode 2 having a width of 30 to 150 μm is provided in a region within the range. At this time, in the pair of sustain electrodes, the central axis 12A, 12B in the lateral direction a of the bus electrode 2 is the central axis in the lateral direction b of the sustain electrodes 16A, 16B, or the central axis 13A in the lateral direction a of the transparent electrodes 3A, 3B. , 13B so as to be on the lower end side. With this structure, the reflectance of the external light 14 can be reduced. Further, since there is no change in luminance, the bright place contrast can be improved and the image quality can be improved.

(Embodiment 2)
In the present embodiment, a description will be given of a plasma panel having a structure that can reduce the reflection of external light without causing a change in screen luminance compared to the plasma panel in the first embodiment. FIG. 7 is a plan view schematically showing the main part of the plasma panel PDP2 in the present embodiment.

  In the plasma panel PDP1 (see FIG. 2), the two bus electrodes 2A and 2B arranged in the cell have the same width Wbc. On the other hand, in the plasma panel PDP2 in the present embodiment, the width Wbd of the lower end side bus electrode 2B arranged on the lower end side from the center in the longitudinal direction b of the discharge cell CL is larger than the center in the longitudinal direction b of the discharge cell CL. The width Wbu of the upper end side bus electrode 2A arranged on the upper end side is made larger.

  In this way, by increasing the width of the bus electrode disposed in the place where the intensity of the reflected light of the external light 14 is the highest, the amount of light reflected by the external light 14 on the panel is reduced when viewed from the whole panel. can do. At this time, in order to make the light emission from the cell constant with the plasma panel PDP1 in the first embodiment, it is necessary to reduce the width of the bus electrode 2A disposed in a place where the intensity of the reflected light of the external light 14 is small. is there. That is, by designing the relationship between the bus electrode width Wbc of the plasma panel PDP1 of the first embodiment and the bus electrode widths Wbu and Wbd of the plasma panel PDP2 of the present embodiment as 2Wbc = Wbu + Wbd, the cell by the sustain discharge Only the reflection of the external light 14 can be greatly reduced without reducing the light emission amount from the plasma panel PDP1 of the first embodiment.

(Embodiment 3)
In this embodiment, a plasma display using the plasma panel described in Embodiment 1 is described. The same applies to the case where the plasma panel shown in the second embodiment is used, and the description of the plasma display using the same is omitted.

  FIG. 8 is an explanatory diagram showing the configuration of the surface discharge AC drive type plasma display 100 in the present embodiment. The plasma display 100 drives an address electrode 9, a sustain electrode 16B (scan electrode), a plasma panel PDP1 having a sustain electrode 16A, an address drive circuit 101 for driving the address electrode 9, and a sustain electrode 16B (scan electrode). A scan pulse output circuit 102 for driving, a sustain pulse output circuit 103 for driving the sustain electrode 16A, a drive control circuit 104 for controlling these output circuits, and a signal processing circuit 105 for processing input signals. I have. The plasma display 100 includes a driving power source 106 that applies a voltage to the plasma panel PDP1 and the like, and a video source 107 that generates a video signal.

  In the plasma display 100, the electrode of the plasma panel PDP1 and the flexible substrate are joined by an anisotropic conductive film. Thereafter, in order to improve the heat dissipation of the plasma panel PDP1, for example, a plate made of aluminum or the like is attached, and drive circuits such as the drive power source 106 and the address drive circuit 101 are incorporated on this plate, thereby completing the plasma display module. . Thereafter, the plasma display 100 is completed by performing further inspection and attaching an outer case.

  As shown in FIGS. 1 to 3, the plasma panel PDP <b> 1 is provided with an address electrode 9 on one opposing back plate and a sustain electrode pair 16 on the other front plate. The discharge space 15 sandwiched between the front plate and the back plate is partitioned by the partition walls 7, and each discharge cell 15 has the partitioned discharge space 15. For example, a mixed gas such as Ne + Xe is sealed in the discharge cell CL, and when a voltage is applied to the sustain electrode pair 16, discharge occurs and ultraviolet rays are generated. In addition, each discharge cell CL is coated with a phosphor that emits red, green, or blue light, and the phosphor is excited by the ultraviolet rays generated as described above in accordance with the phosphor. The colored light is emitted. A color image can be displayed by using this light emission and selecting a discharge cell of a desired color according to the video signal.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.

  For example, in the above embodiment, the case where the present invention is applied to a surface discharge type plasma panel has been described. However, the present invention can also be applied to a counter discharge type plasma panel.

  The present invention is widely used in the manufacturing industry of flat panel displays using plasma discharge, in particular, plasma panels and plasma displays using the same.

It is a perspective view which shows typically the principal part of the plasma panel in one embodiment of this invention. It is a top view which shows typically the plasma panel of FIG. It is sectional drawing which shows the plasma panel of FIG. 1 typically. It is a top view which shows typically the plasma panel which the present inventors examined. It is sectional drawing which shows typically the plasma panel which the present inventors examined. It is a distribution map which shows the reflection intensity from the fluorescent substance layer by external light irradiation. It is a top view which shows typically the principal part of the plasma panel in other embodiment of this invention. It is a figure which shows the structure of the plasma display in one embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Front substrate 2 Bus electrode 2A Upper end side bus electrode 2B Lower end side bus electrode 3 Transparent electrode 3A Upper end side transparent electrode 3B Lower end side transparent electrode 4 Dielectric layer 5 Protective film 6 Back substrate 7 Partition 8 Dielectric layer 9 Address electrode 10 Fluorescence Body layer 11 Central axis 12A, 12B Central axis 13A, 13B Central axis 14 External light 15 Discharge space 16 Sustain electrode pair 16A Sustain electrode 16B Sustain electrode 100 Plasma display 101 Address drive circuit 102 Scan pulse output circuit 103 Sustain pulse output circuit 104 Drive Control circuit 105 Signal processing circuit 106 Drive power supply 107 Video source CL Discharge cells PDP0, PDP1, PDP2 Plasma panel

Claims (2)

A front plate having a plurality of sustain electrode pairs extending in a first direction and a back plate having a plurality of address electrodes extending in a second direction intersecting the first direction are opposed to each other. A plasma display panel having a plurality of discharge cells provided at respective positions where a sustain electrode pair intersects with the plurality of address electrodes,
The discharge cell is a discharge space between the front plate and the back plate opposed thereto and surrounded by a box-shaped partition wall provided on the back plate; a discharge gas filling the discharge space; A phosphor layer provided on the back plate so as to be in contact with the discharge space;
The sustain electrode pair extending in the first direction so as to cross the discharge space in a plan view has a transparent electrode extending in the first direction and a width narrower than the transparent electrode and extending in the first direction. The existing bus electrode overlaps,
Wherein both electrodes of sustain electrode pairs, the central axis of the first direction of the first direction the bus electrodes from the center axis of the transparent electrode, Ri one end near the address electrodes,
Of the bus electrodes constituting the sustain electrode pair, the width of the bus electrode arranged on one end side of the address electrode is equal to the width of the bus electrode arranged on the other end side of the address electrode. A plasma display panel having a width greater than that of the second direction . A front plate having a plurality of sustain electrode pairs extending in a first direction and a back plate having a plurality of address electrodes extending in a second direction intersecting the first direction are opposed to each other. A plasma display panel having a plurality of discharge cells provided at respective positions where a sustain electrode pair and the plurality of address electrodes intersect;
The discharge cell is a discharge space between the front plate and the back plate opposed thereto and surrounded by a box-shaped partition wall provided on the back plate; a discharge gas filling the discharge space; A phosphor layer provided on the back plate so as to be in contact with the discharge space;
The sustain electrode pair extending in the first direction so as to cross the discharge space in a plan view has a transparent electrode extending in the first direction and a width narrower than the transparent electrode and extending in the first direction. The existing bus electrode overlaps,
In both electrodes of the sustain electrode pair, the central axis in the first direction of the bus electrode is closer to one end side of the address electrode than the central axis in the first direction of the transparent electrode.
Of the bus electrodes constituting the sustain electrode pair, the width of the bus electrode arranged on one end side of the address electrode is equal to the width of the bus electrode arranged on the other end side of the address electrode. A plasma display apparatus having a width greater than that of the second direction .

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