JP2783011B2 - Surface discharge display board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge display panel, and more particularly to a surface discharge display panel utilizing gas discharge between electrodes arranged on the same plane.

[0002]

2. Description of the Related Art Surface discharge display panels can be widely used as various display panels, for example, public display panels for numbers, characters, and the like. BACKGROUND ART A gas discharge display panel of a type generally known as a plasma display panel (hereinafter abbreviated as PDP) has a plurality of electrodes having a dielectric layer on a display arranged in an inert gas with a gap therebetween, and a gap between the electrodes. A display panel that emits discharge light by applying an electric field, and has a feature of having a memory function by the action of wall charges generated on the surface of a dielectric layer during discharge. Further, a phosphor may be provided in the vicinity of the electrode or the dielectric layer in order to perform multicolor display by the surface discharge display panel.

FIG. 5 shows an example of the structure of a gas discharge display panel according to the prior art, which shows a typical structure of an AC surface discharge type PDP.
(A) is a sectional view, and (B) is a plan view. In the figure, 1 is one glass substrate, 2 is the other glass substrate,
3 is a writing electrode (X electrode), 4 is a scanning / sustaining electrode (Y
Electrodes), 5 is a dielectric layer, 6 is a phosphor, and 7 is a sustain electrode. The scanning / sustaining electrode (Y electrode) 4 and the sustaining electrode 7 are arranged in parallel on the same plane while maintaining a predetermined discharge gap, and are in contact with the discharge space via the dielectric layer 5. A writing electrode (X electrode) 3 is arranged on one of the glass substrates 1 so as to be orthogonal to the scanning / sustaining electrode (Y electrode) 4 and the sustaining electrode 7, constitutes a discharge cell near the intersection, and forms a dielectric layer 5. The phosphor 6 is applied through the substrate. The glass substrates 1 and 2 are sealed at predetermined intervals to complete a PDP.

In such a surface discharge type ACPDP, the scanning / sustaining electrode (Y electrode) 4 has both a scanning function and a sustaining function. That is, when writing is performed, a writing pulse is applied to the writing electrode (X electrode) 3 corresponding to the scanning pulse applied to the scanning / sustaining electrode (Y electrode) 4, whereby the writing electrode (X electrode) is applied. A discharge is generated between the scanning and sustaining electrodes (Y electrodes) 4. Thereafter, sustain pulses having opposite phases are successively applied between the scanning / sustaining electrode (Y electrode) 4 and the sustaining electrode 7, so that the scanning / sustaining electrode (Y electrode) 4 and the sustaining electrode 7 are applied.
The surface discharge is maintained during the period, and the phosphor 6 is excited by the ultraviolet light generated by the surface discharge, so that a color display can be obtained. In this type of PDP, a long-life PDP can be expected because the phosphor 6 is not directly impacted by ions.

[0005]

However, in recent years, there has been a demand for a portable type personal computer display and the like, and higher efficiency has been required. In addition, it is widely used for public display, and it is urgently required to increase luminance. Also, demand for color is increasing. Under such circumstances, an AC surface discharge type PDP having a long life for color display has attracted attention, but high efficiency and high brightness have not been easily realized.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to improve the above-mentioned disadvantages of the prior art, and to provide an AC surface discharge type gas discharge display panel which can achieve high efficiency and high luminance. Here, the term surface discharge means a discharge between electrodes arranged side by side on the same plane.

[0007]

According to the surface discharge type display panel of the present invention, an electrode pair arranged in a plane for performing a surface discharge is placed in parallel on one of the glass substrates as in the prior art. Instead, it is provided vertically with a barrier rib coated with a phosphor on an inclined portion on a side surface.

[0008]

According to the present invention, since the pair of electrodes that perform surface discharge is placed vertically as described above, both surfaces of the electrode pair can face the discharge space, so that discharge can be performed on both surfaces. In other words, the discharge contributing to light emission is doubled, but the stray capacitance is the same and the stray loss does not increase because the conventional electrode pair is only placed vertically.

In general, since a capacitor is provided between the discharge electrodes, a current flows even during non-discharge, and a stray loss which does not contribute to discharge occurs. In order to minimize this loss, the stray capacitance may be reduced, thereby improving the efficiency. Therefore, in the case of the present invention, as described above, the stray loss is the same as that of the related art, and the discharge energy is twice as large as that of the related art, so that it is possible to provide a surface discharge display panel with improved efficiency.

Conventionally, since the phosphor 6 is applied on the glass substrate 1 or 2, the area of the phosphor is limited by the display area. However, as in the present invention, the phosphor is applied to the inclined portion on the side surface of the barrier rib. Thus, the surface area of the phosphor can be increased as the height of the barrier ribs is increased, and the emission of the phosphor area larger than the display area can be seen in the same display area. it can.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a surface discharge display panel according to a first embodiment of the present invention, and FIG. 2 is a cross-sectional view of the first embodiment. A scanning / sustaining electrode (Y electrode) 4 and a sustaining electrode 7 are juxtaposed at a predetermined interval on a glass substrate 2, and the periphery thereof is fixed with a dielectric layer 5 having a predetermined thickness. Those formed with a discharge resistant material such as MgO are vertically juxtaposed at a predetermined pitch (hereinafter abbreviated as a vertical electrode pair), and a surface discharge is caused between the scan / sustain electrode 4 and the sustain electrode 7. In this case, both surfaces face the discharge space. Further, barrier ribs 8 whose side surfaces are inclined as shown in FIG. 1 are formed between the vertical electrode pairs at the same pitch as the vertical electrode pairs, and the phosphor 6 is applied to the side inclined portions of the barrier ribs 8. On one glass substrate 1, a writing electrode (X electrode) 3 is formed of a translucent conductor such as a Nesa film (SnO2), and a discharge resistant material such as MgO is formed thereon. The glass substrates 1 and 2 thus formed are sealed together, and a dischargeable rare gas is introduced into the inside to seal the glass substrates.

The scanning / sustaining electrode (Y electrode) 4 has both a scanning function and a sustaining function. That is, when writing, the writing electrode (X electrode) corresponding to the scanning pulse applied to the scanning / sustaining electrode (Y electrode) 4 is used.
A discharge is generated between the writing electrode (X electrode) 3 and the scanning / sustaining electrode (Y electrode) 4 by applying a writing pulse to 3. Thereafter, by applying sustain pulses of opposite phases to each other between the scan / sustain electrode (Y electrode) 4 and the sustain electrode 7, the scan / sustain electrode (Y electrode) 4 and the sustain electrode 7 The surface discharge is maintained, and the phosphor 6 is excited by the ultraviolet light generated by the surface discharge, so that a color display can be obtained.

FIG. 3 is a perspective view of a second embodiment of the surface discharge display panel according to the present invention, and FIG. 4 is a sectional view of the second embodiment. In the second embodiment, the writing electrode (X electrode) 3
Is formed on the glass substrate 2 side. Therefore, it is not necessary to use a light-transmitting electrode as in the first embodiment, and the cost can be reduced with good yield. In addition, in the case of the first embodiment, the light emission of the phosphor 6 can be directly observed only through the glass substrate 1 instead of observing the light emission of the phosphor 6 through the translucent electrode as in the first embodiment. This has the effect of further improving the luminance. Note that the insulator 9 is formed between the write electrodes (X electrodes) 3 to once form a flat surface, and is used to smoothly form an electrode pair covered with the barrier ribs 8 and the dielectric layer 5. belongs to.

[0014]

As described above, according to the present invention, a pair of electrodes that perform surface discharge is placed vertically, and both sides of the pair of electrodes face the discharge space, and discharge occurs on both sides. However, the stray capacitance is the same, and the stray loss does not increase because only the conventional electrode pair is placed vertically. Therefore, the discharge energy is twice as large as the conventional one while the stray loss is the same as the conventional one, so that the efficiency is improved.

Furthermore, in the conventional structure, since the phosphor 6 is applied on the glass substrate 1 or 2, the phosphor area is limited by the display area. However, as in the present invention, the inclined portion on the side surface of the barrier rib is provided. When the barrier ribs are made higher, the phosphor area can be increased as the height of the barrier ribs is increased. The light emission of the phosphor area larger than the display area can be seen in the same display area, so that there is an effect that the luminance can be increased. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the first embodiment of the present invention.

FIG. 3 is a perspective view of a second embodiment of the present invention.

FIG. 4 is a sectional view of a second embodiment of the present invention.

FIG. 5 is a sectional view (A) and a plan view (B) showing an AC surface discharge display panel according to a conventional technique.

[Explanation of symbols]

 1, 2 glass substrate 3 writing electrode (X electrode) 4 scanning / sustaining electrode (Y electrode) 5 dielectric layer 6 phosphor 7 sustaining electrode 8 barrier rib 9 insulator

Continuation of the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H01J 11/02 H01J 17/04 H01J 17/29 H01J 17/48-17/49

Claims (1)

(57) [Claims] 1. A flat plate-like electrode having a pair of electrodes arranged on the same plane so that discharge is possible and having a dielectric layer on the surface.
A surface discharge display panel having a pair of electrodes, wherein at least both sides of a flat electrode pair having a dielectric layer on the surface face discharge spaces.