KR100761146B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a display panel, and more particularly to a plasma display panel.

The present invention can prevent erroneous discharge or non-lighting phenomenon due to the bus electrodes formed on the upper and lower surfaces of the plasma display panel, thereby improving the overall contrast of the panel.

The present invention includes a substrate and a plurality of scan electrodes and sustain electrodes formed in parallel directions on the substrate, wherein a scan electrode and a sustain electrode having a first structure are formed in a first region on the substrate, In another second region, a scan electrode and a sustain electrode having a second structure different from the first structure are formed.

Description

Plasma Display Panel

1A to 1B illustrate an electrode structure of a conventional plasma display panel.

2 is a view for explaining an example of the plasma display panel of the present invention;

3 is a view showing the structure of a plasma display panel of the present invention;

4 is a view for explaining the structure of the plasma display panel of the present invention in more detail;

5A to 5B are views showing different structures of the plasma display panel of the present invention.

***** Explanation of symbols for the main parts of the drawing *****

201: front substrate 211: rear substrate

202 and 204 scan electrodes 203 and 205 sustain electrodes

202a and 204a: transparent electrode formed on the scan electrode

203a, 205a: transparent electrode formed on the sustain electrode

202b: bus electrode formed on the scan electrode

203b: bus electrode formed on the sustain electrode

The present invention relates to a display panel, and more particularly to a plasma display panel.

In general, a plasma display panel (Plasma Display Panel) of the display panel is a partition wall formed between the front substrate and the rear substrate forms a unit cell, each of the Neon (He), Helium (He) or neon and helium A main discharge gas such as a mixed gas (Ne + He) and an inert gas containing a small amount of xenon are filled. When discharged by a high frequency voltage, the inert gas generates vacuum ultraviolet rays and emits phosphors formed between the partition walls to realize an image. Such plasma display panels are not only easy to thin and large in size, but also greatly improved as a result of recent technology developments, and thus are attracting attention as next generation display devices.

Such a discharge occurs in a dummy region in which an image is not displayed on the upper and lower surfaces of the display surface on which the image of the conventional plasma display panel is displayed. To understand this in more detail and easily, let's look at the following Figures 1A-1B.

1A to 1B illustrate an electrode structure of a conventional plasma display panel.

1A to 1B, in the conventional plasma display panel, scan electrodes Y1, Ym, and Yn and sustain electrodes Z1, Zm and Zn are arranged in parallel directions between the front substrate 101 and the rear substrate 102. Each of the transparent electrodes 110a, 120a, 130a, and 140a and the bus electrodes 110b, 120b, 130b, and 140b is included. The two areas are divided into an effective (light emitting) area P1 contributing to the image display of the panel and a dummy (non-light emitting) area P2 not contributing.

In more detail, as illustrated in FIG. 1B, the scan electrode Ym and the sustain electrode Zm each include the transparent electrodes 110a and 120a in parallel to each other in the center portion of the plasma display panel, and the bus electrodes 110b and 120b respectively. The scan electrodes (Y1, Yn) and the sustain electrodes (Z1, Zn) include transparent electrodes (130a, 140a) in the direction parallel to each other on the upper and lower surfaces of the effective (light-emitting) region P1 including) and The dummy (non-light emitting) region P2 including the bus electrodes 130b and 140b is formed. As a result, it can be seen that the electrode structures of the effective (light emitting) region P1 and the dummy (non-light emitting) region P2 are identical.

Therefore, unwanted false discharge such as flickering or unlit shape by the bus electrodes 130b and 140b occurs in the dummy (non-light-emitting) region P2 that does not contribute to the image display of the plasma display panel.

Such a mis-discharge phenomenon has a problem that the contrast ratio of the plasma display panel is deteriorated.

In order to solve this problem, an object of the present invention is to prevent false discharge in a discharge cell formed in a dummy region of a plasma display panel.

The present invention for achieving the above object comprises a substrate and a plurality of scan electrodes and sustain electrodes formed in parallel with each other on the substrate, the first electrode on the substrate is formed with a scan electrode and a sustain electrode of the first structure In the second region different from the first region, a scan electrode and a sustain electrode having a second structure different from the first structure are formed.

The first region may be an active region, and the second region may be a dummy region.

The scan electrode and the sustain electrode of the first structure each include a transparent electrode and the bus electrode, and the scan electrode and the sustain electrode of the second structure each include only the transparent electrode.

In addition, the second region in which the scan electrode and the sustain electrode of the second structure are formed may be located at the outer side more than the first region.

The second region may be a dummy region that does not contribute to image display when the scan electrodes and the sustain electrodes are positioned at both ends of the display surface in the arrangement direction.

In addition, the width of the transparent electrode of the scan electrode and the sustain electrode of the first structure is characterized in that it is equal to or larger than the width of the transparent electrode of the scan electrode and the sustain electrode of the second structure.

Hereinafter, a plasma display panel of the present invention will be described in detail with reference to the accompanying drawings.

2 is a view for explaining an example of the plasma display panel of the present invention.

Referring to FIG. 2, the plasma display panel according to the present invention has a front panel 200 having a display surface on which an image is displayed on which a scan electrode 202, 204, Y and a sustain electrode 203, 205, Z are formed on the front substrate 201. ) And a rear panel on which a plurality of address electrodes 213 and X are arranged so as to intersect the aforementioned scan electrodes 202, 204 and Y and the sustain electrodes 203, 205 and Z on the rear substrate 211. 210 is coupled side by side with a certain distance between.

Here, the display surface for displaying an image of the plasma display panel may be divided into a first area and a second area.

In the first region, the scan electrodes 202 and Y and the sustain electrodes 203 and Z of the first structure each include the transparent electrodes 202a and 203a and the bus electrodes 202b and 203b, respectively. The scan electrodes 204 and Y and the sustain electrodes 205 and Z of the structure respectively comprise transparent electrodes 204a and 205a, whereas, unlike the first structure in the first region, a bus electrode (not shown) do not include.

The front panel 200 has scan electrodes 202, 204 and Y and sustain electrodes 203, 205 and Z, preferably for mutual discharge in the discharge space, i. A pair of scan electrodes 202, 204, Y and sustain electrodes 203, 205, Z including a transparent electrode (a) formed of a transparent ITO material and a bus electrode (b) made of an opaque metal material is included. . Scan electrodes 202, 204, Y and sustain electrodes 203, 205, Z are covered by one or more top dielectric layers 204 that limit discharge current and insulate between electrode pairs, and top dielectric layers 204 In order to facilitate the discharge condition, a protective layer 205 on which magnesium oxide (MgO) is deposited is formed on the upper surface.

The rear panel 210 includes a plurality of discharge spaces, that is, barrier ribs 212 of stripe type (or well type) for partitioning the discharge cells. In addition, a plurality of address electrodes 213 and X are provided for supplying data pulses.

The lower dielectric layer 115 is formed between the address electrodes 213 and X and the phosphor layer 214.

In FIG. 2, only one example of the plasma display panel of the present invention is shown and described, and the present invention is not limited to the plasma display panel having the structure of FIG. For example, in the plasma display panel of FIG. 2, scan electrodes 202, 204, and Y and sustain electrodes 203, 205, and Z are formed on the front panel 200, and address electrodes 213 and X are rear surfaces. Although only one example is formed on the substrate 211, the address electrodes 213 and X of the rear panel 210 may be formed on the front panel 200, or the scan electrodes of the front panel 200 may be formed on the rear panel 210. 202, 204, and Y and address electrodes 213 and X may be formed. Alternatively, the address electrodes 213 and X may be formed on the partition wall 212 of the rear panel 210.

That is, in the plasma display panel of the present invention, the scan electrodes 202, 204, and Y and the sustain electrodes 203, 205, and Z are formed between the front substrate 201 and the rear substrate 211. Do.

3 is a view showing the structure of a plasma display panel of the present invention.

Referring to FIG. 3, a structure in which scan electrodes Ya, Yb, and Yn and sustain electrodes Za, Zb, and Zn are formed on the plurality of discharge cells 301 in parallel with each other in the plasma display panel according to the present invention. It is shown.

It is formed by dividing the first area A and the second area B on the display surface of the plasma display panel. In the first area A, the scan electrode Yb and the sustain electrode Zb of the first structure are formed. In the second region B, which is different from the first region A, the scan electrodes Ya and Yn and the sustain electrodes Za and Zn of the second structure B different from the first structure are formed. It is formed differently. Here, the first region A and the second region B will be described in detail with reference to FIG. 4.

4 is a view for explaining the structure of the plasma display panel of the present invention in more detail.

Referring to FIG. 4, in the first area A on the display surface of the plasma display panel of the present invention, the scan electrodes 202 and Y and the sustain electrodes 203 and Z of the first structure are respectively transparent electrodes 202a and 203a. And bus electrodes 202b and 203b. On the other hand, in the second region B, the scan electrodes 204 and Y and the sustain electrodes 205 and Z of the second structure include only the transparent electrodes 204a and 205a, whereas in the first region A, the bus It does not include an electrode (not shown). 3, the second region B in which the scan electrode Y and the sustain electrode Z of the second structure are formed is located at the outer side more than the first region A. FIG.

In this case, the second region B is disposed at both ends of the display surface in the arrangement direction of the scan electrode Y and the sustain electrode Z, and a dummy region (non-emission) that does not contribute to the image display of the plasma display panel. Region). This is because the transparent electrodes 202a and 203a and the bus electrodes 202b and 203b are formed on each of the scan electrodes 202 and Y and the sustain electrodes 203 and Z formed in parallel between the front substrate 201 and the rear substrate 211 of the panel. The first region A including) emits visible light by discharge due to the voltage difference between the two electrodes across the filled inert gas (Gas). In the dummy (non-emitting) region, which is the second region B, the panel Both ends of the filled inert gas (Gas) are filled because the scan electrodes 204 and Y and the sustain electrodes 205 and Z formed thereon each include only the transparent electrodes 204a and 205a, and do not include a bus electrode (not shown). The positive electrode voltage difference becomes smaller.

In another aspect, the widths of the transparent electrodes formed in the first structure in the first region A and the second structure in the second region B are as follows.

Here, the widths t1 of the scan electrodes 202 and Y of the first structure and the transparent electrodes 202a and 203a of the sustain electrodes 203 and Z may correspond to the scan electrodes 204 and Y and the sustain electrode of the second structure. It may have a width equal to the width t2 of the transparent electrodes 204a and 205a of 205 and Z, or may be narrow to the width t3 of the transparent electrodes 204a and 205a of the second structure.

In the present invention, the scan electrodes 204 and Y of the second structure and the width t3 of the transparent electrodes 204a and 205a of the sustain electrodes 205 and Z are more preferably narrow. The important fact here is that between the front substrate 201 and the rear substrate 211 of the plasma display panel, the scan electrodes 204 and Y and the sustain electrodes 205 and Z each include only the transparent electrodes 204a and 205a, It has a 2nd structure in the 2nd area | region which does not contain an electrode (not shown). As a result, even when the bus electrode (not shown) is not included and the voltage difference between the two electrodes decreases to prevent mis-discharge, in the second region B, the scan electrodes 204 and Y of the second structure and the sustain electrode 205, If the width t2 is greater than the width t2 of the transparent electrodes 204a and 205a formed at each of Z), it is preferable to become smaller because false discharge may occur between the transparent electrodes 204a and 205a.

Accordingly, due to the electrode characteristics of the second region B, it is possible to prevent the occurrence of mis-discharge or unlit phenomenon in the dummy (non-luminescent) region, preferably in the dummy (non-luminescent) region, and the contrast of the panel. Is improved.

Alternatively, only the transparent electrodes 204a and 205a are formed in the dummy (non-light emitting) region having the second structure in the second region B formed on the plasma display panel, and include bus electrodes (not shown). It can also be formed so that the manufacturing cost can be reduced.

5A to 5B are views showing different structures of the plasma display panel of the present invention.

Referring to FIG. 5A, a dummy (non-light emitting) region symmetrically formed on an upper surface and a lower surface of a plasma display panel of the present invention, and a scan electrode Ya having a second structure in a second region having a width W2 of the second region. , Yb, Yg and Yn and the sustain electrodes Za, Zb, Zg and Zn each include only the transparent electrode a and do not include the bus electrode b. In contrast, in the first region having the width W3 of the first region, which is an effective (light emitting) region, the scan electrodes Yc, Yd, Ye, and Yf of the first structure and the sustain electrodes Zc, Zd, Ze, and Zf Each of these transparent electrodes a and a bus electrode b is included.

Here, the first structure of the first region having the width W3 of the first region and the structure of the second region having the width W2 of the second region are the first of the first region A shown in FIG. 4. The structure and the second structure of the second region B are the same.

In addition, the lines of the plurality of discharge cells 301 formed in the width W2 of the second region may have lines of 0.05% or more and 5% or less of the lines of the plurality of discharge cells 301 formed in the width W1 of the entire panel. Have

In the width W2 of the second region formed on the upper surface of the plasma display panel, the plurality of discharges of the scan electrodes Ya and Yb and the sustain electrodes Za and Zb of the second structure each include only the transparent electrode a. In the width W2 of the second region having the cell 301 line and formed on the bottom surface of the panel, the scan electrodes Yg and Yn and the sustain electrodes Zg and Zn of the second structure each include the transparent electrode a. To have a plurality of discharge cell 301 lines. In contrast, in the width W3 of the first region, the scan electrodes Yc, Yd, Ye, and Yf of the first structure and the sustain electrodes Zc, Zd, Ze, and Zf each have a transparent electrode a and a bus electrode. (b) has a line of discharge cells 301.

Therefore, since only the transparent electrode a is formed in the second area W2, which is a dummy (non-light emitting) area symmetrically formed on the upper and lower surfaces of the plasma display panel, the dummy (non-light emitting) area does not contribute to image display. Misdischarges can be prevented.

Referring to FIG. 5B, a dummy (non-light emitting) region asymmetrically formed on the upper and lower surfaces of the plasma display panel of the present invention, and the scan electrode of the second structure in the second region having the widths W5 and W6 of the second region. (Ya, Yb, Yc, Yg, Yn) and the sustain electrodes Za, Zb, Zc, Zg, and Zn each include only the transparent electrode a and do not include the bus electrode b. In contrast, in the first region having the width W7 of the first region, which is an effective (light emitting) region, the scan electrodes Yd, Ye, Yf and the sustain electrodes Zd, Ze, and Zf of the first structure are each transparent. An electrode a and a bus electrode b are included.

Here, the structure of the first structure of the first region having the width W7 of the first region and the structure of the second region having the widths W5, W6 of the second region are shown in FIG. The second structure of the first structure and the second region B is the same.

The width W5 of the second region on the upper surface of the plasma display panel and the width W6 of the second region on the lower surface of the panel have a plurality of different discharge cell 301 lines, where the width of the second region is W5 and W6 have different lines of 0.05% or more and 5% or less of the lines of the plurality of discharge cells 301 formed in the width W4 of the entire panel. More specifically, in the width W5 of the second region formed on the upper surface of the plasma display panel, the scan electrodes Ya, Yb, Yc and the sustain electrodes Za, Zb, and Zc of the second structure are respectively transparent electrodes a. Scan electrodes Yg and Yn and the sustain electrodes Zg and Zn of the second structure are each transparent in the width W6 of the second region formed on the bottom surface of the panel, including only a plurality of lines of discharge cells 301 including only one. The electrode a includes a plurality of lines of discharge cells 301. In contrast, in the width W7 of the first region, the scan electrodes Yd, Ye, and Yf and the sustain electrodes Zd, Ze, and Zf of the first structure respectively form the transparent electrodes a and the bus electrodes b. Including a plurality of discharge cell 301 lines.

Therefore, since only the transparent electrode is formed in the second region, which is a dummy (non-luminescent) region which is asymmetrically formed on the upper and lower surfaces of the plasma display panel, mis-discharge in the dummy (non-luminescent) region which does not contribute to image display is prevented. You can prevent it. This improves the contrast of the panel.

As described above, it will be understood by those skilled in the art that the technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and All changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

As described above, the present invention can prevent erroneous discharge or unlit phenomenon due to the bus electrodes formed on the upper and lower surfaces of the plasma display panel, and the contrast of the entire panel can be improved.

Claims (6)

Board; A plurality of scan electrodes and sustain electrodes formed on the substrate in parallel with each other; Including, The scan electrode and the sustain electrode of the first structure are formed in the first region on the substrate, and the scan electrode and the sustain of the second structure different from the first structure in the second region different from the first region. An electrode is formed, Wherein the scan electrode and the sustain electrode of the first structure each include a transparent electrode and a bus electrode, and the scan electrode and the sustain electrode of the second structure each include only a transparent electrode. The method of claim 1, And wherein the first area is an active area and the second area is a dummy area. delete The method of claim 2, And a second region in which the scan electrode and the sustain electrode of the second structure are formed is located outside the first region. delete The method of claim 2, And a width of the transparent electrode of the scan electrode and the sustain electrode of the first structure is equal to or greater than a width of the transparent electrode of the scan electrode and the sustain electrode of the second structure.

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