KR19980023335A - Plasma display device - Google Patents

Abstract

The present invention discloses a PDP having a novel configuration.

DC-type PDP is simple to operate and strong in kitchen, but it has a problem of late start of discharge and impossible to maintain discharge. AC-type PDP has the opposite advantages and disadvantages.

In the present invention, the dielectric layer is composed of alternating thin and thick portions to achieve uniform and powerful discharge characteristics in AC type or hybrid type PDP.

Description

Plasma display device

1 is a cross-sectional view showing a DC type PDP,

2 is a cross-sectional view showing an AC PDP,

3 (a), (b) are cross-sectional perspective views showing embodiments of the present invention PDP,

4 and 5 are cross-sectional views showing the construction of the dielectric layer of the present invention.

* Description of the symbols for the main parts of the drawings *

P1, P2: substrate E1, E2: electrode

I: Dielectric layer I1: thin section

I2: thick part P: protective layer

The present invention relates to a plasma display panel (PDP).

PDPs that use gas discharge phenomena for image display include a direct current (DC) type, an alternating current (AC) type, and a hybrid type depending on the driving method thereof.

1 shows a DC PDP first. This is a simple configuration in which the electrodes E1 and E2 are arranged opposite to each other on the two substrates P1 and P2 and partitioned into partitions B. The image is displayed by direct discharge by the selection of the electrodes E1 and E2. .

As a result, the driving is extremely simple, but since the discharge cannot be started and maintained quickly, it is difficult to display a moving image having high resolution.

2 shows an AC type PDP, which forms a dielectric layer I on one electrode (e.g., E2), and applies a voltage of one polarity to the electrode E2 to the surface of the dielectric layer (I). The discharge is started by causing a rapid avalanche phenomenon by applying a voltage of different polarity in the state where wall disharge is formed on the wall discharging.

The AC type PDP has a memory effect in which discharge starts faster and maintains discharge than the DC type. However, since AC voltages of different polarity must be alternately supplied, driving is complicated and the discharge starts quickly, but after discharge is started. The main discharge between the two electrodes (E1, E2) is weaker than the DC type due to the presence of the dielectric layer (I), so the long-term display of the purification phase is rather disadvantageous than the DC type.

In addition, AC-type PDPs have a problem that wall charges become unstable until kitchen discharge occurs, which makes it difficult to exhibit uniform discharge characteristics across large PDPs.

In view of the above problems, an object of the present invention is to provide a PDP that guarantees uniform discharge characteristics and strong electrical discharge in a PDP having a dielectric layer.

According to the present invention for achieving the above object, the PDP is characterized in that the dielectric layer is composed of a thin thin portion and a thick thick portion alternately formed in a stripe (stripe) form.

According to this configuration, the wall charge is mainly concentrated in the thick portion, and the kitchen dish is concentrated in the thin portion, so that it is possible to cause a strong kitchen dish with a uniform and rapid discharge start.

Such specific features and advantages of the present invention PDP will become more apparent from the following description of the preferred embodiments with reference to the accompanying drawings.

In FIGS. 3A and 3B, the dielectric layer I coated on the electrode E2 on the substrate (for example, P2) has the thin portion I1 and the thick portion I2 striped according to the present invention. It is composed of phases alternately.

The stripe may be formed to be parallel to the electrode E2 as shown in (a) or to cross as shown in (b).

Since the capacitance of the dielectric layer I, that is, the charge amount is proportional to the thickness thereof, the wall charges are mainly formed on the surface of the thick portion I2, and the thin thin portion I1 has a thickness of the opposite electrode because the dielectric layer I does not interfere with the dielectric layer. There is a good chance of cooking between E1).

Therefore, since a large amount of wall charge is concentrated on the surface of the thick portion I2, not only the discharge is started quickly but also the thick portion I2 is uniformly striped, so that the discharge is uniform throughout. In addition, in the thin portion I1, the thickness of the dielectric layer is thin, thereby enabling a powerful electric discharge.

4 shows a method of forming the dielectric layer I, which first forms the thin portion I1 by printing or the like, and then laminates the thick portion I2 through pattern printing on the upper portion thereof. That's how.

However, the required thickness of the dielectric layer (I) is generally not only sufficient to print once, but also a protective layer is generally laminated on the surface of the dielectric layer (I) to prevent damage to the dielectric layer (I) during AC driving.

Accordingly, in FIG. 5, the dielectric layer I is printed in a stripe pattern on the substrate P2, and then the protective layer P is formed on the entire surface.

Then, the protective layer P itself becomes the thin portion I1, and the composite layer of the dielectric layer I and the protective layer P becomes the thick portion I2, which is easy to manufacture and allows sufficient protection against electron penetration. do.

Claims (5)

In a plasma display device in which electrodes opposite to each other are arranged on two substrates and a dielectric layer is formed on one electrode, The dielectric layer is formed by alternating a thin thin portion and a thick thick portion in a stripe form. Plasma display element characterized by. The method of claim 1, The stripe of the thin part and the thick part extend in parallel with the electrode Plasma display element characterized by. The method of claim 1, The stripe of the thin portion and the thick portion extends to intersect the electrode Plasma display element characterized by. The method of claim 1, The dielectric layer forms the thin portion on the substrate, Configured to form the thick portion by pattern-printing the dielectric layer on the thin portion in the form of a stripe. Plasma display element characterized by. The method of claim 1, The dielectric layer is formed by patterning the dielectric layer on the substrate in the form of a stripe, and then forming a protective layer thereon. Plasma display element characterized by.