JPH04345733A - Surface discharge type plasma display panel - Google Patents

Abstract

PURPOSE:To facilitate ensuring prescribed withstand voltage and prevent interelectrode short circuit in a surface discharge type PDP. CONSTITUTION:In a surface display type plasma display panel 1 in which plural pairs of electrodes 13 and 14 are adjoiningly arranged in parallel mutually on one side inner surface of a pair of substrates 11 and 21 opposite via a discharge space 30, the one side and the other side display electrodes 13 and 14 are multilayer-arranged so as not to overlap mutually via an insulating layer 60.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface discharge type plasma display panel (PDP).

A surface discharge type PDP with a three-electrode structure suitable for matrix display of various colors using phosphors has a plurality of electrode pairs each consisting of a pair of display electrodes arranged parallel to each other and adjacent to each other;
and a plurality of address electrodes arranged perpendicularly to each electrode pair. Usually, the electrode pair is provided on the substrate on the display side, and the address electrode, together with the phosphor, is provided on the substrate on the back side.

A selective discharge cell for selecting a dot to emit light is defined at the intersection of one electrode of the electrode pair and the address electrode, and a main discharge cell is defined by the electrode pair in the vicinity of the selective discharge cell. The phosphor is excited by ultraviolet rays generated by the surface discharge of the main discharge cell and emits light.

0004

[Prior Art] Conventionally, a pair of display electrodes has a P
It is formed at the same time as the DP is manufactured. That is, for example, an electrode pair is formed by providing a conductive film on a substrate and patterning the conductive film all at once using a photolithography method.

That is, in the conventional surface discharge type PDP, one display electrode and the other display electrode of the electrode pair are arranged in a plane on a substrate with a predetermined gap between them.

[0006]

[Problems to be Solved by the Invention] Conventionally, as the display surface becomes larger and the total length of the electrode pairs becomes longer, it becomes difficult to make the gap between the electrode pairs uniform when patterning the electrodes. The specified withstand voltage (
There were problems in that a high dielectric strength (withstanding voltage) could not be obtained in many cases, and short circuits between electrodes could occur.

Note that if a predetermined withstand voltage cannot be obtained, when a driving voltage is applied, dielectric breakdown occurs between the display electrodes before gas discharge occurs, and as a result, the dielectric layer covering the substrate or electrode pair Cracks will occur in the PDP and the PDP will be damaged.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a PDP in which a predetermined withstand voltage can be easily ensured and short circuits between electrodes can be prevented.

[0009]

[Means for Solving the Problems] In order to solve the above-mentioned problems, the PDP according to the invention of claim 1 has a pair of substrates 11 and 21 facing each other with a discharge space 30 in between, as shown in FIG.
In a surface discharge type plasma display panel 1 in which a pair of display electrodes 13 and 14 are arranged adjacent to each other in parallel on one inner surface of They are arranged in multiple layers so that they do not overlap each other.

In the PDP according to the second aspect of the invention, a plurality of electrode pairs 12 are arranged on one substrate 11 and the other substrate 2
1, a plurality of address electrodes 2 perpendicular to the electrode pair 12;
In a surface discharge plasma display panel 1 having a three-electrode structure in which electrodes 2 are arranged, one electrode 1 of the electrode pair 12
3 and the other electrode 14 are arranged in multiple layers such that they do not overlap each other with the insulating layer 60 in between.

[0011]

[Operation] One electrode 14 of the electrode pair 12 is connected to the other electrode 1
3 is provided on an insulating layer 60 that covers 3. That is, electrode 1
3 and 14 are provided separately into a lower layer and an upper layer with an insulating layer 60 in between, and at this time, the electrodes 13 and 14 are three-dimensionally arranged so that they do not overlap each other in a plan view.

Since the electrodes 13 and 14 are not on the same plane, even if a patterning defect occurs when forming these electrodes 13 and 14, a short circuit between the electrodes 13 and 14 cannot occur.

Furthermore, since the gap between the edge of the electrode 13 and the edge of the electrode 14 is larger than the discharge gap for surface discharge (the distance between the electrodes 13 and 14 in the direction of the display surface), Dielectric breakdown can be suppressed.

[0014]

[Example] Figure 3 shows a surface discharge type P with a three-electrode structure according to the present invention.
FIG. 3 is a cross-sectional view showing the structure of DP1.

The PDP 1 has a glass substrate 11 on the display surface H side.
, a plurality of electrode pairs 1 consisting of a pair of display electrodes (hereinafter simply referred to as electrodes) 13 and 14 arranged adjacent to each other on the inner surface of the glass substrate 11 with an insulating layer 60 in between so as not to overlap each other.
2. A dielectric layer 17 for generating a surface discharge by AC (alternating current) driving, a lattice-shaped partition wall 19, a glass substrate 21 on the back side, and a dielectric layer 17 provided on the inner surface of the glass substrate 21 so as to be perpendicular to the electrode pair 12. address electrodes 22, strip-shaped partition walls 29,
It is composed of a phosphor 28 of a predetermined luminescent color, a sealing glass 31, and the like.

The internal discharge space 30 is filled with a discharge gas consisting of, for example, neon mixed with a small amount of xenon, and this discharge space 30 is divided into unit light emitting regions by partition walls 19 and 29. One phosphor 28 is provided for each unit light emitting region so as to expose a portion of the address electrode 22 to the discharge space 30.

One electrode pair 12 corresponds to one line of the display. Within the unit light emitting area, a main discharge cell is defined by the electrode pair 12, and a selective discharge cell is defined by the back side electrode 14 of the electrode pair 12 and the address electrode 22.

Each of the electrodes 13 and 14 is a transparent electrode made of a Nesa film (tin oxide film), and a narrow metal electrode (not shown) (bus electrode) is provided on the back side of each electrode 13 and 14 to supplement conductivity. stacked on the side.

Note that a protective film made of MgO (not shown) is provided on the surface of the dielectric layer 17. Further, one electrode 13 of each electrode pair 12 is electrically shared among the plurality of lines by a connecting conductor (not shown), and a common driving voltage is applied to these electrodes 13.

[0020] When manufacturing the PDP 1 configured as described above, the electrodes 13 and 14 are formed separately. That is, first, the NESA film provided on the glass substrate 11 is patterned to form the electrode 13, and the insulating layer 60 made of silicon dioxide or the like is formed to cover almost the entire surface of the glass substrate 11 including the upper surface thereof. . Thereafter, a NESA film is provided again on the insulating layer 60 and patterned to form the electrode 14.

Then, a portion of the insulating layer 60 is removed to expose the end of the electrode 13 so as to enable connection with the outside.

That is, in the PDP 1, the electrodes 13 and 14 are not provided two-dimensionally as in the conventional case, but are provided three-dimensionally in a multilayered arrangement divided into a lower layer and an upper layer with the insulating layer 60 interposed in between. ing.

Therefore, the electrodes 13, 1 in the direction of the display surface H
4, that is, the discharge gap g of the surface discharge that occurs on the surface of the dielectric layer 17, the gap between the electrodes 13 and 14 that diagonally face each other with the insulating layer 60 in between is always larger. Before the start of the gas discharge), the electrodes 13,1
4. Dielectric breakdown between the two is less likely to occur.

Furthermore, since the electrodes 13 and 14 are not adjacent to each other in the same plane, even if a patterning defect occurs when forming these electrodes 13 and 14, a short circuit between the electrodes 13 and 14 will not occur.

In the above-mentioned embodiment, the surface of the dielectric layer 17 serving as the discharge surface is made flat, but the dielectric layer 1
A step may be provided on the surface of the electrode 7 to equalize the wall charge accumulation conditions for each electrode 13 and 14, thereby stabilizing the drive.

In the embodiments described above, the thickness and material of the insulating layer 60 can be appropriately selected depending on the setting of the driving voltage so as to obtain a desired withstand voltage.

[0027]

According to the present invention, a predetermined withstand voltage can be easily ensured, and short circuits between electrodes can be prevented.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing the structure of a surface discharge type PDP with a three-electrode structure according to the present invention.

[Explanation of symbols]

1 PDP 11, 21 Glass substrate (substrate) 12 Electrode pair 13,14 Electrode 60 Insulating layer 22 Address electrode 30 Discharge space

Claims (2)

[Claims] 1. A surface on which a pair of display electrodes (13) (14) are arranged parallel to each other and adjacent to each other on one inner surface of a pair of substrates (11) (21) facing each other with a discharge space (30) in between. The discharge type plasma display panel (1) is characterized in that the one display electrode (13) and the other display electrode (14) are arranged in multiple layers so as not to overlap with each other with an insulating layer (60) in between. A surface discharge plasma display panel. 2. A plurality of electrode pairs (1) on one substrate (11).
2) are arranged, and the electrode pair (2) is arranged on the other substrate (21).
In a surface discharge plasma display panel (1) having a three-electrode structure in which a plurality of address electrodes (22) are arranged perpendicular to the electrode pair (12), one electrode (12) of the electrode pair (12) is arranged.
3) and the other electrode (14) are arranged in multiple layers such that they do not overlap each other with an insulating layer (60) in between.