JP4118076B2 - Plasma display panel - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plasma display panel used for image display such as a television receiver and an advertisement display panel.
[0002]
[Prior art]
There are various types of plasma display panels. An AC type plasma display panel is shown in FIGS. 6 to 9 as a specific conventional plasma display panel (hereinafter referred to as a panel). 7 shows details of the non-display area and the terminal area B in FIG.
[0003]
In this panel, the front substrate 3 and the rear substrate 4 are sealed by the frit seal 2, and the discharge space 14 is maintained by the partition wall 17 formed on the rear substrate 4. In the discharge space, helium, neon, A mixed gas of at least one kind of argon rare gas and xenon is enclosed.
[0004]
On the surface substrate 3 made of a transparent material such as glass, the electrode groups of the scan electrodes 5 and the sustain electrodes 6 are arranged in parallel, and the respective electrode groups are drawn to the left and right of the panel, and the scan electrode terminal group 5A. And sustain electrode terminal group 6A are formed and connected to scan electrode drive circuit 7 and sustain electrode drive circuit 8.
[0005]
On the back substrate 4, a data electrode group 9A composed of stripe-shaped data electrodes 9 is arranged orthogonally to the scan electrodes 5 and the sustain electrodes 6, and the data electrode groups 9A are drawn up and down the panel, The upper data electrode terminal group 10 </ b> A is connected to the data electrode drive circuit 11. The lower data electrode terminal group 10B not connected to the data electrode drive circuit 11 is sealed with a resin 12 for insulation and moisture prevention.
[0006]
More specifically, as shown in FIG. 7, among the surface substrate 3 and the back substrate 4 arranged to face each other across the discharge space 14, the dielectric layer 15 and the inner surface of the surface substrate 3 made of a transparent material such as glass are provided. A pair of striped scanning electrodes 5 and sustaining electrodes 6 covered with a protective film layer 16 are arranged in parallel.
[0007]
Inside the rear substrate 4, stripe-shaped barrier ribs 17 are arranged in parallel at regular intervals so as to be isolated from the stripe-shaped data electrodes 9 orthogonal to the scan electrodes 5 and the sustain electrodes 6 and to form the discharge spaces 14. It is arranged.
[0008]
In a section partitioned by the partition wall 17 on the surface of the back substrate 4, a phosphor group composed of phosphors 19 that emit blue, green, or red light is provided, and the lower layer has the phosphor group as shown in FIGS. 8 and 9. A data electrode group of the data electrode 9 is attached, and the data electrode 9 is covered with a base dielectric layer 18.
[0009]
In a write operation, when a positive write pulse voltage Vd is applied to the data electrode 9 and a negative scan pulse voltage Vsc is applied to the scan electrode 5, a write discharge occurs in the discharge space 14, and a protective film layer on the scan electrode 5 Positive charges accumulate on the surface of 16. Thereafter, at the beginning of the sustain operation, a negative sustain pulse is applied to sustain electrode 6, and negative sustain pulse voltage Vs is alternately applied to scan electrode 5 and sustain electrode 6, thereby sustaining sustain discharge. Finally, the sustain discharge is stopped by applying a negative erase pulse voltage Ve to the sustain electrode 6.
[0010]
At this time, a non-display area 20 that does not participate in display exists between the display area 13 of the panel and the frit seal 2 as shown in FIG. Similar to the discharge space 14, the non-display area 20 is filled with a mixed gas of at least one kind of rare gas such as helium, neon, and argon and xenon.
[0011]
[Problems to be solved by the invention]
In such a conventional panel, in the non-display area 20 in the vicinity of the display area portion 13, an accidental erroneous discharge that cannot be controlled occurs due to the influence of the display area to which the voltage is applied and the influence of the electrode lead-out portion. If the phosphor 19 that protrudes from the region 13 emits a little light, or if the enclosed gas contains neon, there is a problem that the neon light emission of orange is generated but leaks to the display region 13 although the amount is extremely small. is there.
[0012]
Further, if the data electrode terminal group that is not connected to the data electrode driving circuit 11 is exposed, if a material having a high migration property such as Ag is used as the electrode material, the resin 12 having a high insulation and moisture resistance is coated and hermetically sealed. It is necessary to stop.
[0013]
An object of the present invention is to provide a plasma display panel that can reduce a false discharge generated in a non-display area in the vicinity of the display area section 13 and generate a stable discharge in the display section.
[0014]
Another object is to eliminate resin sealing of the data electrode terminal group on the non-connection side.
[0015]
[Means for Solving the Problems]
The plasma display panel according to claim 1 of the present invention includes a front substrate and a rear substrate that are opposed to each other across a discharge space, a scan electrode and a sustain electrode formed on the front substrate, the scan electrode and the sustain electrode, A data electrode group consisting of a plurality of data electrodes formed on the back substrate so as to be orthogonal and one end located inside the discharge space, and the other end of the data electrode as a panel A data electrode terminal group formed by being drawn out to one side in the vertical direction of the data electrode, a dummy electrode formed on the back substrate so as to surround an outer periphery of the data electrode group and the data electrode terminal group, and the data electrode group and the dummy It has a base dielectric layer formed so as to cover the electrode, and a partition and a phosphor formed on the base dielectric layer .
[0016]
According to this configuration, the accidental erroneous discharge generated in the non-display area is suppressed by the dummy electrode , and the data electrode terminal group on the non-connection side is eliminated, so that the insulation and moisture-proof resin coat can be omitted .
[0017]
A plasma display panel according to claim 2 of the present invention is characterized in that, in claim 1 , the dummy electrode is connected to a predetermined potential.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
The panel of the present invention is different from the conventional example in that a dummy electrode 21 is formed so as to surround the terminal portion of the data electrode group as shown in FIG. FIG. 2 shows details of the area A in FIG. 1 on the lower side of the panel, in which the data electrode terminal group for connecting the data electrode group 9A to the data electrode driving circuit 11 is not provided.
[0019]
As shown in FIGS. 1 and 2, the front substrate 3 and the rear substrate 4 are sealed by the frit seal 2, and the discharge space 14 is maintained by the barrier ribs 17 formed on the rear substrate 4. Is filled with a mixed gas of at least one kind of noble gas of helium, neon, and argon and xenon.
[0020]
On the surface substrate 3, which is a transparent material such as glass, the electrode groups of the scan electrode 5 and the sustain electrode 6 are arranged in parallel, and each electrode group is drawn to the left and right of the panel, and is maintained with the scan electrode terminal group 5A. An electrode terminal group 6A is formed and connected to the scan electrode drive circuit 7 and the sustain electrode drive circuit 8.
[0021]
As shown in FIG. 3, a data electrode group 9A composed of stripe-shaped data electrodes 9 is arranged on the rear substrate 4 so as to be orthogonal to the scan electrodes 5 and the sustain electrodes 6, and the data electrode group 9A In the case of FIG. 1, one is connected to the data electrode drive circuit 11 from the upper data electrode terminal group 10A. The other end is located inside the discharge space 14 sealed by the frit seal 2 as shown in FIG. 4 and is formed up to the end of the display region portion 13.
[0022]
Dummy electrodes 21 are formed on the left and right outermost sides of the data electrode group 9A. The dummy electrode 21 is formed on the back substrate 4 as shown in FIG. 5, and the dummy electrode 21 at any position is covered with the underlying dielectric layer 18.
[0023]
Specifically, the left end 21L of the dummy electrode 21 is led to the left end of the panel upper data electrode terminals 10A, it is extended downward in proximity to the data electrodes 9 of the left end of the data electrode groups 9A, further, in proximity to the other end of the data electrodes 9 as shown in FIG. 4 is extended toward the right end of the data electrode group 9A, further upward in proximity to the data electrodes 9 of the right end of the data electrode groups 9A The right end 21R of the dummy electrode 21 is extended to the right end of the data electrode terminal group 10A on the upper side of the panel.
[0024]
As shown in FIG. 2, a dielectric layer 15 and a protective film layer 16 are disposed on the surface substrate 3 made of a transparent material such as glass, among the surface substrate 3 and the back substrate 4 that are opposed to each other with the discharge space 14 interposed therebetween. As shown in FIG. 3, the scanning electrode 5 group and the sustaining electrode 6 are arranged in parallel on the back substrate 4. The stripe-shaped partition walls 17 are arranged in parallel so as to isolate the stripe-shaped data electrode 9 group perpendicular to the six groups and to form the discharge space 14.
[0025]
The data electrode 9 is covered with a base dielectric layer 18. A phosphor 19 is formed on the partition wall 17. Also, the rear substrate 4 and the surface board 3 is bonded by frit seal 2 is sealed. The Kida Me electrode 21 before being formed on the rear substrate 4 is formed so as to surround the bottom of the screen as shown in FIG.
[0026]
In addition, the light emission display operation | movement about the panel 1 of this invention is performed similarly to the above-mentioned conventional panel.
In this embodiment, since the dummy electrodes 21 in the non-display area 2 0 is attached, when scan pulse voltage Vsc and sustain pulse voltage Vs is alternately applied to the scan electrodes 5 and sustain electrodes 6, non While the display area 2 0 even very rarely discharge occurs, it is suppressed and the dummy electrode 21 on the rear substrate 4 opposite exists. Further, the predetermined potential to the dummy electrode 21 of that, for example, if it is fixed to a DC ground potential, large further suppressing effect.
[0027]
In the plasma display panel according to the embodiment of the present invention, since there is no data electrode terminal group 10B on the non-connection side, there is no need for an extra insulation or moisture-proof resin coat in that portion, and materials and processes can be reduced. It becomes.
[0028]
The dummy electrode 21 in the above embodiment has a shape close to the data electrode 9 at the right end of the data electrode group 9A, the other end of the data electrode 9 and the data electrode 9 at the left end of the data electrode group 9A. by forming a dummy electrode 21 which is not the data input in proximity to at least a portion of the left end of the data electrodes 9 of the rightmost end of the electrode 9 and the data electrode group 9A and the data electrode group 9A, hidden area the occurrence of discharge at 2 0 can be reduced as compared with the prior art.
[0029]
【The invention's effect】
As described above, according to the present invention, the front substrate and the rear substrate opposed to each other with the discharge space interposed therebetween, the scan electrode and the sustain electrode formed on the front substrate, and the scan electrode and the sustain electrode are orthogonal to each other. And a data electrode group consisting of a plurality of data electrodes formed on the back substrate so that one end portion is located inside the discharge space, and the other end portion of the data electrode in the vertical direction of the panel. A data electrode terminal group formed on one side, a dummy electrode formed on the back substrate so as to surround an outer periphery of the data electrode group and the data electrode terminal group, and the data electrode group and the dummy electrode are covered. a base dielectric layer formed as the those having a base dielectric layer formed by the barrier ribs and phosphor, suppress erroneous discharges in the non-display area accidentally occur It can be, and can provide a good plasma display panel display quality.
[Brief description of the drawings]
1 is a plan view of an AC type plasma display panel according to the present invention. FIG. 2 is a perspective view showing details of an area A in FIG. 1. FIG. 3 is a sectional view taken along line XX ′ in FIG. FIG. 5 is a cross-sectional view taken along the line YY ′ of FIG. 2. FIG. 6 is a plan view of a conventional AC type plasma display panel. 6 is a perspective view showing details of area B in FIG. 6. FIG. 8 is a sectional view taken along line XX 'in FIG. 7. FIG. 9 is a plan view of area B on the back substrate 4 side of the conventional example. Explanation of]
2 Frit seal 3 Front substrate 4 Rear substrate 5 Scan electrode 5A Scan electrode terminal group 6 Sustain electrode 6A Sustain electrode terminal group 7 Scan electrode drive circuit 8 Sustain electrode drive circuit 9 Data electrode 9A Data electrode group 10A Data electrode terminal group 11 Data electrode Drive circuit 13 Display area 14 of panel Discharge space 15 Dielectric layer 16 Protective film layer 17 Partition 18 Underlying dielectric layer 19 Phosphor 20 Non-display area 21 Dummy electrode 21L Left end 21R of dummy electrode 21R Right end of dummy electrode 21

Claims (2)

A front substrate and a rear substrate disposed opposite to each other with a discharge space interposed therebetween, a scan electrode and a sustain electrode formed on the surface substrate, and one end portion of the discharge space being orthogonal to the scan electrode and the sustain electrode A data electrode group comprising a plurality of data electrodes formed on the back substrate so as to be located inside the data electrode, and a data electrode terminal formed by drawing the other end of the data electrode to one side in the vertical direction of the panel A group, a dummy electrode formed on the back substrate so as to surround an outer periphery of the data electrode group and the data electrode terminal group, a base dielectric layer formed so as to cover the data electrode group and the dummy electrode, A plasma display panel having a partition and a phosphor formed on the base dielectric layer . The plasma display panel according to claim 1, wherein the dummy electrode is connected to a predetermined potential .

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