KR100851475B1 - AC-PDP and formation method of barrier rib of the AC-PDP - Google Patents

Abstract

In the surface discharge AC plasma display panel and the method of forming the partition wall of the panel of the present invention, the partition gap of the dummy area is made smaller than the partition gap of the display area so that a discharge voltage of a predetermined magnitude is applied to the electrodes of the panel so that the discharge in the cells of the display area is reduced. Even if it is generated, unnecessary erroneous discharges and abnormal discharges are prevented from occurring in the dummy region.

Description

Surface Discharge AC Plasma Display Panel and Panel Formation Method {AC-PDP and formation method of barrier rib of the AC-PDP}

1 is an exploded perspective view showing a state in which a typical PDP is separated.

FIG. 2 is a diagram illustrating an address electrode structure of a PDP in which an error discharge cell is generated in a dummy region of the PDP due to conventional cutting unevenness. FIG.

3 is a partial plan view showing a partition structure of the PDP according to the present invention;

The present invention relates to a plasma display panel (PDP: Plasma Display Panel (hereinafter referred to as PDP)), and more particularly, to minimize the gap of the PDP connected in the PDP used in the multi-screen (multi screen) device ( The present invention relates to a multi-type surface discharge AC plasma display panel and a barrier rib forming method capable of preventing erroneous discharge occurring in a dummy region cell of a PDP due to non-uniformity of cutting.

A plasma display panel is a light emitting device that displays an image by exciting phosphor formed in a discharge cell, and is lighter than a conventional CRT (Cathod Ray Tube), has a simple manufacturing process, and has a thin and large screen. As a video display device used for bulletin boards, video conference displays, and large wall-mounted TVs in recent years, its use has been greatly increased.

1 is an exploded perspective view showing a state in which a general PDP is separated.

In the PDP, the front substrate 10, which is the display surface on which an image is displayed, and the rear substrate 20 forming the rear surface are coupled in parallel with a predetermined distance therebetween.

On one side of the front substrate 10, a sustain electrode (X) and a scan electrode (Y) for maintaining light emission of a cell described later by mutual discharge in one pixel, that is, a transparent electrode (or an ITO electrode formed of a transparent ITO material) Electrodes provided with (Xa, Ya) and the bus electrodes (Xb, Yb) made of a metal material are installed in pairs.

The sustain electrode X and the scan electrode Y are covered by a dielectric layer 12 that limits the discharge current and insulates the electrode pairs, and a protective layer 13 is formed on the top surface.

The sustain electrode X and the scan electrode Y each perform a function of a scan electrode for generating wall charges during the initial driving of the PDP to form wall charges, and a function of a common electrode for applying an AC voltage during discharge.

The rear substrate 20 has a plurality of discharge spaces, that is, stripe-type (or dot-type) barrier ribs 21 for forming the cells C are arranged in parallel and intersect with the electrodes X and Y. A plurality of address electrodes A, which perform address discharge at the site to generate vacuum ultraviolet rays, are disposed in parallel to the partition wall 21, and a dielectric layer 23 is formed thereon.

In addition, the top surface of the rear substrate 20 is coated with the R. G. B fluorescent layer 24 that emits visible light for image display at the time of address discharge except the top surface of the partition wall 21.

However, these PDPs are currently being developed up to 63 inches due to technical limitations or equipment limitations.

Therefore, for the display of advertising requires the characteristics of large, thin, high brightness, the existing 60-inch class is only a small size for advertising, the demand for a larger size is constantly required.

In order to satisfy these demands, a multi-screen device is used in which a large number of PDPs are arranged to form a large screen. Thus, in the case of arranging a plurality of PDPs, a process of cutting an end after PDP production in order to minimize contact between adjacent PDPs Will go through.

By the way, in such a cutting operation has an error range of the cutting line due to an error in the equipment and technical problems, such an error range is about several hundred μm to several mm.

FIG. 2 is a diagram illustrating an address electrode structure of a PDP in which an erroneous discharge cell is generated in a dummy region of the PDP due to conventional cutting irregularities.

That is, in the ⓐ part, the discharge control is possible by using a signal applied to the dummy address electrode, but in the case of the ⓑ part, the dummy address electrode is cut by the cutting and the pulse applied to the dummy address electrode is not reached, so that the discharge control is impossible. The transition will occur.

Accordingly, an object of the present invention to solve the above-described problem is to improve the barrier rib structure of the PDP to prevent the mis-discharge in the dummy area due to the cutting error for the PDP when forming the multi-screen.

In order to achieve the above object, the surface discharge AC plasma display panel of the present invention is divided into a unit plasma display panel, a display area in which normal cells are discharged, and a dummy area formed due to uneven cutting on one or more side surfaces adjacent to each other. And a plurality of partition walls spaced apart in a predetermined direction corresponding to the display area and the dummy area on the lower substrate constituting the unit plasma display panel, the partition walls formed in the dummy area rather than the separation distance between the partition walls formed in the display area. To form a narrow distance between the liver.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a partial plan view showing a barrier rib structure of the PDP according to the present invention.

In the conventional PDP, the pitches of the partition walls formed in the panel are the same regardless of the display area and the dummy area.

However, in the present invention, as shown in FIG. 3, the distance between the partition walls 21 is different in the display area and the dummy area.

That is, the pitch between the partitions 21 is made narrower in the dummy area than in the display area.

As described above, a PDP having a large number of cells C in a matrix form uses micro discharges, and when ultraviolet rays are discharged by applying electrical energy to the discharge gas introduced between the substrates 10 and 20, ultraviolet rays are emitted. The ultraviolet light of the specific wavelength band emits the fluorescent material 24 of the rear substrate 20 to generate visible light, thereby allowing an image to be viewed.

In this way, visible light is generated in the discharged cell C. If the neighboring cells cannot be separated spatially, a cell that should not be turned on is turned on, or a discharge phenomenon spreads and the cell that does not turn on appears to be turned on. .

In order to prevent such a phenomenon, a partition wall 21 dividing a cell and a cell exists in the PDP.

However, the firing voltage for discharging the cell C increases as the distance between the partition walls 21 decreases.

Therefore, if the spacing of the partition wall 21 of the dummy area is reduced from that of the display area, when the discharge voltage of the panel is applied to the panel to discharge the cell C, the display area reaches the threshold voltage and is discharged. Since a high discharge voltage is required, discharge does not occur, and thus unnecessary erroneous discharge and abnormal discharge do not occur.

In FIG. 3, a partition wall (dashed line) is additionally formed between partition walls 21 according to an exemplary embodiment of the present invention, thereby showing a shape in which the partition wall spacing in the dummy region is reduced.

At this time, preferably, the partition spacing of the dummy area is narrower than 3/4 of the partition spacing of the display area to prevent erroneous discharge and abnormal discharge caused by the increase of the discharge voltage.

As described above, the barrier rib structure of the multi-type surface discharge alternating current plasma display panel of the present invention forms the barrier ribs of the dummy area smaller than the barrier ribs of the display area so that unnecessary discharge and abnormal discharge in the dummy area during discharge in the display area. Can be prevented.

Claims (4)

In the multi-type surface discharge AC plasma display panel in which a plurality of unit plasma display panels are combined, The unit plasma display panel is divided into a display area where normal cells are discharged and a dummy area formed due to uneven cutting at one or more side surfaces adjacent to each other. Form a plurality of partition walls spaced apart in a predetermined direction corresponding to the display area and the dummy area on the lower substrate constituting the unit plasma display panel, but formed in the dummy area rather than the separation distance between the partition walls formed in the display area. The surface discharge AC plasma display panel, characterized in that the separation distance between the partitions are formed narrow. The method of claim 1, And the separation distance between the partition walls of the dummy area is less than or equal to 3/4 compared to the separation distance between the partition walls of the display area. In the method of forming a partition of a surface discharge AC plasma display panel, The surface discharge AC plasma display panel is divided into a display area where normal cells are discharged and a dummy area formed on a side of the display area. Barrier ribs for discharging cells are simultaneously formed on a lower substrate of the surface discharge AC plasma display panel corresponding to the display area and the dummy area, And forming a narrower separation distance between the partition walls formed in the dummy area than the separation distance between the partition walls formed in the display area. The method of claim 3, wherein The separation distance between the partition walls of the dummy region is less than or equal to 3/4 compared to the separation distance between the partition walls of the display area partition wall forming method of the AC plasma display panel.

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