KR930006888B1 - Self-shift type gas discharge display - Google Patents

Abstract

The device for easy manufacturing process by employing the surface discharge mechanism comprises: a pair of substrates for forming discharge space and putting dis-charge gas in; a pair of electrodes 1 which are arrayed in the parallel form and horizontally extended; a pair of electrodes 2 which are vertically extended in a meandering form, and each extended portions are alternately and repeatly placed on; a number of electrodes 3, which are correspondant to respective horizontal lines of the electrods 1 and placed near by the electrode 2.

Description

AC-driven self-shifting gas discharge display

1 is an exploded perspective view of a conventional AC drive type self-shifting gas discharge display device.

2 is a plan view for explaining the electrode structure of a conventional AC-driven self-shifting gas discharge display device.

3 is a cross-sectional view for explaining a discharge state of a conventional AC drive type self-shifting gas discharge display device.

4 is a waveform diagram of a driving voltage applied to each discharge cell of FIG.

5 is a plan view for explaining the electrode structure of the AC drive self-shift gas discharge display device according to the present invention.

6 is a cross-sectional view for explaining a discharge state of an AC drive type self-shifting gas discharge display device according to the present invention.

* Explanation of symbols for main parts of the drawings

1,2: substrate 3,4: dielectric layer

5 protrusion 6 discharge part

7: Upper vertical connection 8: Lower vertical connection

9: horizontal connection part 10: discharge space part

11: through hole Y ₁ , Y ₂ : first electrode

X ₁ , X ₂ : second electrode W ₁ , W ₂ : third electrode

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an alternating current drive self-shifting gas discharge display device, and more particularly, to an alternating current drive self shifting gas discharge display device employing a surface discharge method in order to facilitate a manufacturing process.

Gas discharge display devices, namely plasma display panels (PDPs), are a kind of flat panel display panels, and are being actively applied to wall-mounted TVs and monitors.

These PDPs are either DC or AC depending on the supply current type, and are classified into matrix type and self-shift type according to the driving method. The dot matrix type has a problem that the X and Y electrode driving circuits must be provided for each pixel, so that the size of the dot matrix can be increased and the driving circuit becomes complicated and the cost of the driving circuit becomes relatively larger than that of the display panel. In view of these problems, self-shifting PDPs have been introduced.

The self-shifting PDP is a pair of X electrode drivers and a pair of Y electrode drivers, that is, self-shifting by priming coupling between discharge cells adjacent to each other in line so that the telephone station can be driven by only four drivers. It is.

Such a conventional self-shift type PDP is constructed as shown in Figs. That is, a plurality of pairs of the Y ₁ electrode and the Y ₂ electrode are arranged in the rear substrate 1 in parallel at regular intervals with respect to the vertical direction. The Y ₁ and Y ₂ electrode pairs extend in the horizontal direction in a shape in which each of the protrusions 5 alternately engages at a predetermined interval. This Y electrode pair is covered with a constant thickness by the dielectric layer 3.

On the other hand, in the front substrate 2, a pair of X ₁ electrodes and X ₂ electrodes are repeatedly arranged in parallel with respect to the horizontal direction. The X ₁ and X ₂ electrode pairs extend in the vertical direction on the meander. That is, horizontally elongated discharge parts 6 each having an upper vertical connection part 7 and a lower vertical connection part 8 extending in opposite directions at both ends thereof are repeatedly disposed at regular intervals in the vertical direction and adjacent discharge parts ( The upper vertical connecting portion 7 and the lower vertical connecting portion 8 of 6) are connected to each other by the horizontal connecting portion 9.

The front substrate 2 also has W electrodes (write electrodes: write electrodes) disposed adjacent to one side of the X electrode pair corresponding to each discharge portion 7 of the X ₁ electrode. The pair of X electrodes and the group of W electrodes are covered with a dielectric layer 4 of constant thickness.

As described above, the front substrate 2 and the rear substrate 1 on which each electrode is formed are opposed to each other at regular intervals, and a discharge gas is sealed in the space 10 therebetween to form a panel. At this time, each discharge portion 6 of the X electrode pair is positioned so as to face across the Y ₁ and Y ₂ protrusions adjacent to the Y electrode pair, and the W electrode is positioned as shown in FIG. 2 so as to face the Y ₁ protrusion. Accordingly, the discharge cells are a third party W electrode and Y ₁ is a discharge cell (W) fill between the electrodes is formed first discharge cell (A) between the Y ₁ electrode and the X _first electrode as shown in Fig., The A second discharge cell B between the X ₁ electrode and the Y ₂ electrode, a third discharge cell C between the Y ₂ electrode and the X ₂ electrode, and a fourth between the X ₂ electrode and the Y ₁ electrode Discharge cells D are formed, respectively. The first discharge cell A is formed between the Y ₁ electrode of the fourth discharge cell and the X ₁ electrode adjacent to the X ₂ electrode of the fourth discharge cell adjacent to the fourth discharge cell D. In this manner, the first to fourth discharge cells A to D form a pair and are repeatedly arranged in the horizontal direction. One write cell W is positioned at one end of each line.

The driving waveforms applied to the cells described above according to the driving pulses applied to the electrodes are as shown in FIG. That is, in the waveform of FIG. 4A applied to the write cell W, the display data is read by the write pulse to the write cell W and the control pulse continued while the discharge sustain pulse is applied to the Y ₁ electrode. 1 is jonghwa coupled to the discharge cell (a) the discharge is shifting, the 4-B ° is jonghwa coupled to the second discharge cell (B) adjacent by Y ₁ electrode while applying the discharge sustain pulse to the X ₁ electrode discharge Is shifted, and while the discharge sustain pulse is applied to the Y ₂ electrode of FIG. 4 -C, it is vertically coupled to the adjacent third discharge cell C by the X ₁ electrode to shift the discharge, and X _{2 of} FIG. 4 -D While the discharge sustain pulse is applied to the electrode, the discharge is shifted by being vertically coupled to the adjacent fourth discharge cells D by the Y ₂ electrode. Immediately after the discharge is shifted to the fourth discharge cell D, the second display data is written to the write cell W and the discharge of the write cell W is shifted to the first discharge cell A, and the fourth 4- As shown in Fig. E, the discharge of the fourth discharge cell D is shifted to the first discharge cell A of the adjacent discharge cell group.

In the conventional self-shift type PDP operated as described above, the discharge occurs at the cross opposing portions of the upper electrode and the lower electrode, so that when the front substrate 2 is disposed on the rear substrate 1, the gap between them and the opposite electrodes are disposed. The manufacturing process was not easy because it had to be carefully adjusted to position each other precisely.

In addition, when the opposite discharge occurs at the cross-facing portion, the phosphor applied to the front substrate deteriorates its characteristics due to the ion shock generated during discharge, which causes a shortening of the lifetime of the PDP.

In order to solve the problems of the prior art as described above, the present invention provides an AC discharge type self-shifting gas discharge display device which can be easily manufactured by forming all electrodes on a back plate and using a surface discharge mechanism. It is.

In order to achieve the above object, the present invention provides a pair of substrates for forming a discharge space portion at regular intervals therebetween and encapsulating the discharge gas in the discharge space portion, and a pair of parallelly arranged at a predetermined interval and extending in a horizontal direction. A first electrode, a pair of second electrodes extending in the vertical direction on the meander, and the extended portions are alternately arranged alternately with each other, corresponding to each horizontal line of the first electrode, And a third electrode disposed adjacent to each other, wherein the pair of first electrodes each of the protrusions of the horizontally extending portions are alternately arranged at regular intervals, and the pair of second electrodes are each other at both ends thereof. The discharge portion elongated in the horizontal direction with the upper vertical connection part and the lower vertical connection part extending in the opposite direction may face across two adjacent protrusions of the first electrode. A self-shifting gas discharge display device of an alternating current drive type having a meander shape in which an upper vertical connection part of an adjacent discharge part and a lower vertical connection part thereof are connected to each other by a horizontal connection part. Forming the pair of first electrodes on any one of the substrates, covering the dielectric layer having a predetermined thickness, forming the pair of second electrodes and the plurality of third electrodes thereon, and covering the dielectric layer having a predetermined thickness. do.

It is advantageous to form a through hole in a portion of the second electrode and the third electrode opposite to the first electrode to spread the negative glow discharge evenly on the second electrode and the third electrode.

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

The present invention will be described with reference to FIGS. 5 and 6. In Fig. 1, parts corresponding to Figs. 1 to 3 are denoted by the same reference numerals and redundant description thereof will be omitted.

In the present invention, an aluminum film is deposited on one of the pair of substrates 1, 2, i.e., the back substrate, which is an insulator, for example, having a thickness of about 1 μm, and applying a first electrode mask to perform photoetching. A pair of first electrodes Y ₁ and Y ₂ are formed. After depositing the dielectric layer 3 thereon, for example, having a thickness of about 1 μm, and again depositing an aluminum film, for example, having a thickness of about 1 μm, the second and third electrode masks are applied to the pair of second electrodes X through photoetching. ₁ , X ₂ ) and a plurality of third electrodes W are formed at the same time. The dielectric layer 4 is entirely deposited on it, for example, about 1 m. The other substrate 2 coated with phosphor on the back substrate 1 thus formed, for example, the transparent front substrate, is covered with a sealing agent at constant intervals, and the circumference is sealed with a sealing agent, between the substrates 1 and 2. It is formed by injecting a discharge gas into the formed discharge space portion (10).

The above electrode formation can be formed by a thick film printing method instead of a thin film printing method. In the thick film printing technique, a silk screen mask for the first electrode is manufactured, and a silk screen mask for the second electrode and the third electrode is manufactured. After that, the first substrate is printed by applying the silk screen mask for the first electrode to the back substrate 1, the dielectric layer is applied thereon, and then the silk screen masks for the second and third electrodes are applied. It is formed by simultaneously printing the third electrode and applying a dielectric layer thereon.

In the present invention manufactured as described above, the discharge of the write cell W occurs on the surface of the dielectric layer 4 that crosses the W electrode and the Y ₁ electrode, and the dielectric layer 4 crosses the Y ₁ electrode and the X ₁ electrode. The discharge of the first discharge cell A occurs on the surface of the. Similarly, the discharges of the second to fourth discharge cells B to D are generated while being sequentially shifted. In addition, in the present invention, the through hole 11 is formed at a portion opposite to the Y electrode in order to spread the negative glow evenly on the X electrode and the W electrode during the surface discharge.

As described above, in the present invention, all the electrodes are formed on one substrate, that is, the rear engine, so that the discharge occurs at the surface of the dielectric layer on the intersection of the lower electrode and the upper electrode. There is no need for careful alignment, and the degree of freedom in adjusting the discharge interval can be increased, which is easy to manufacture.

In addition, when the phosphor is coated on the front substrate for color display, the ion impact is reduced on the phosphor during discharge as compared with the conventional counter discharge method, and thus the life of the PDP may be extended.

Claims (2)

A pair of substrates for forming a discharge space portion at regular intervals therebetween and for encapsulating the discharge gas in the discharge space portion; A pair of first electrodes arranged in parallel at a predetermined interval and extending in a horizontal direction; A pair of second electrodes extending in the vertical direction on the meander, and the extended portions alternately arranged alternately with each other; A plurality of third electrodes corresponding to each horizontal line of the first electrode and disposed adjacent to the side of the second electrode; Wherein the pair of first electrodes are each of the protrusions of the portion extending in the horizontal direction are alternately arranged at regular intervals, the pair of second electrodes are respectively vertically extending in opposite directions at both ends thereof; Horizontally elongated discharge parts having a connection part and a lower vertical connection part are repeatedly arranged at regular intervals in a vertical direction opposite to two adjacent protruding portions of the first electrode, and the upper vertical connection part of the adjacent discharge part and the lower vertical part thereof. An AC drive type self-shifting gas discharge display device having a meander shape in which a connecting portion is connected to each other by a horizontal connecting portion, wherein the pair of first electrodes are formed on any one of the pair of substrates, and the dielectric layer has a predetermined thickness. Covering and forming a pair of second electrodes and a plurality of third electrodes thereon and covering a dielectric layer of a predetermined thickness; Self-shifting gas discharge display device of the AC drive method. 2. The self-driving gas discharge display device according to claim 1, wherein the second electrode and the third electrode have a through hole formed in a portion facing the first electrode.

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