KR100625501B1 - Plasma Display Panel - Google Patents

Abstract

The present invention relates to a structure of a plasma display panel, and more particularly, to a plasma display panel including a dielectric layer on a front substrate.

The present invention is to provide a plasma display panel which can compensate the color temperature of B subpixels having a relatively low color temperature and improve luminance by forming different thicknesses of the dielectric layers for R, G, and B subpixels on the front substrate.

The present invention provides a plasma display panel in which a dielectric layer formed on a front substrate is formed on a partition wall of a rear substrate and includes partition walls that partition R, G, and B subpixels, wherein the thickness of the dielectric layer is R, G, and B subpixels. Characterized in that formed differently.

R, G, B subpixels, dielectric layer thickness, bulkhead, color temperature

Description

Plasma Display Panel

Figure 1a is a view showing the structure of a conventional three-electrode AC surface discharge type plasma display panel.

Figure 1b is a view showing the structure of the front substrate and the rear substrate of the conventional three-electrode AC surface discharge type plasma display panel.

Figure 2a is a first embodiment according to the present invention, showing the structure of the front substrate and the rear substrate of the AC surface discharge type plasma display panel.

2b shows a second embodiment according to the invention;

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

10: front substrate 12: dielectric layer

16A: scan electrode 16B: sustain electrode

20: rear substrate 210a, 210b, 210c: R, G, B subpixel

230a, 230b, 230c, 230d: bulkhead t ₁ , t ₂ , t ₃ : thickness

The present invention relates to a structure of a plasma display panel, and more particularly, to a plasma display panel including a dielectric layer on a front substrate.

In general, a plasma display panel (hereinafter referred to as "PDP") displays an image including a character or a graphic by emitting phosphors by 147 nm ultraviolet rays generated when a He + Xe or Ne + Xe inert mixed gas is discharged. Done. Such a PDP is not only thin and easy to enlarge, but also greatly improved in quality due to recent technology development.

In particular, the three-electrode AC surface discharge type PDP has advantages of low voltage driving and long life because wall charges are accumulated on the surface during discharge and protect the electrodes from sputtering caused by the discharge.

1A is a diagram showing the structure of a conventional three-electrode AC surface discharge type plasma display panel. As shown, the three-electrode AC surface discharge type PDP 100 is coupled in parallel with the front substrate 10, which is the display surface on which the image is displayed, and the rear substrate 20 forming the rear surface, with a predetermined distance therebetween.

The front substrate 10 has a sustain electrode 11 for maintaining light emission of a cell by mutual discharge in one pixel below, that is, a transparent electrode 11a formed of a transparent ITO material and a bus electrode 11b made of a metal material. The sustain electrodes 11 are formed in pairs.

The sustain electrode 11 is covered by a dielectric layer 12 that limits the discharge current and insulates the electrode pairs, and protects the upper surface of the dielectric layer 12 by depositing magnesium oxide (MgO) to facilitate discharge conditions. Layer 13 is formed.

In the rear substrate 20, a plurality of discharge spaces, that is, partitions 21 for forming a cell are arranged in parallel with each other, and a vacuum ultraviolet ray is generated by performing address discharge at a portion crossing the sustain electrode 11. A plurality of address electrodes 22 are formed.

In addition, an upper surface of the rear substrate 20 is coated with R, G, and B fluorescent layers 23 that emit visible light for image display during address discharge.

Figure 1b is a view showing the structure of the front substrate and the rear substrate of the conventional three-electrode AC surface discharge type plasma display panel. As shown in FIG. 1B, a scan electrode 16A and a sustain electrode 16B are formed on the front substrate 10 to maintain light emission of a cell by mutual discharge in one pixel.

At this time, the transparent electrode 16a formed of a transparent ITO material and the scan electrode 16A made of a metal material and the sustain electrode 16B made of a metal material are formed in pairs.

At this time, the scan electrode 16A and the sustain electrode 16B are covered by the dielectric layer 12 which limits the discharge current and insulates the electrode pairs.

However, in the conventional structure shown in FIG. 1B, R, G, and B subpixels 110a, 110b, and 110c are formed in the same size, and the dielectric layer 12 formed on the front substrate 10 is formed on the rear substrate 20. Since the thickness t of the same dielectric layer 12 is formed on the partition walls 121 that divide the R, G, and B subpixels 110a, 110b, and 110c, B subpixels having a relatively small color temperature do not generate strong discharge. Do not. Therefore, the brightness and color temperature of the B subpixel are lowered.

Accordingly, the present invention is to solve the above problems, to form a different thickness of the dielectric layer for each of the R, G, B sub-pixels on the front substrate to compensate for the color temperature of the B sub-pixels having a relatively low color temperature and improve the brightness It is to provide a plasma display panel that can be.

In order to achieve the above object, the present invention provides a plasma display panel in which a dielectric layer formed on a front substrate is formed on a partition wall of a rear substrate and includes partition walls that partition R, G, and B subpixels. Each of the G, B subpixels is formed differently.

In addition, the thickness of the dielectric layer of the B subpixel is the thinnest.

In addition, the thickness of the dielectric layer of the B subpixel is 25um, the thickness of the dielectric layer of the G subpixel is 35um, and the thickness of the dielectric layer of the R subpixel is 45um.

Also, at least one of the R subpixel or the G subpixel may comprise a blue dielectric layer.

In addition, the heights of the G subpixel partition walls are the same among the heights of the R, G, and B subpixel partition walls.

In addition, the partition wall is characterized in that the height of the partition wall is the same.

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

FIG. 2A illustrates a structure of a front substrate and a rear substrate of an AC surface discharge plasma display panel according to a first embodiment of the present invention. As shown in FIG. 2A, a scan electrode 16A and a sustain electrode 16B are formed on the front substrate 10 to maintain light emission of a cell by mutual discharge in one pixel.

At this time, the scan electrode 16A and the sustain electrode 16B made of the transparent electrode 16a and the bus electrode 16b are formed in pairs.

At this time, the scan electrode 16A and the sustain electrode 16B are covered by the dielectric layer 12 which limits the discharge current and insulates the electrode pairs.

At this time, the thickness of the dielectric layer 12 formed on the front substrate (10), (t _1, t _2, t ₂₎ are are formed differently for each R, G, B sub-pixels (210a, 210b, 210c), B subpixels The thickness t ₃ of the dielectric layer 12 of 210c is the thinnest.

That is, the thickness t ₃ of the dielectric layer 12 of the B subpixel 210c is 25 μm, the thickness t ₂ of the dielectric layer 12 of the G subpixel 210b is 35 μm, and the R subpixel 210a is provided. The thickness t ₁ of the dielectric layer 12 is 45 um.

At this time, one or more of the R subpixel 210a or the G subpixel 210b includes the blue dielectric layer 12a, which is a blue dielectric layer 12a in the R subpixel 210a or the G subpixel 210b. In order to reduce the color temperature of the R subpixel 210a or the G subpixel 210b, the color temperature of the B subpixel 210c having a relatively low color temperature is compensated for.

Of course, the blue sublayer 210a is included in the B subpixel 210c having a low color temperature. Formation can compensate for further improved color temperature.

Meanwhile, the partition wall 230 formed on the rear substrate 20 may include the first partition wall 230a, the second partition wall 230b, and the third partition wall 230c that define the R, G, and B subpixels 210a, 210b, and 210c. ), And the fourth partition wall 230d.

At this time, the second partition 230b and the third partition 230c that divide the G subpixel 210b have the same height as the height of the second partition 230b and the third partition 230c, but the first partition It is formed smaller than the height of 230a and the height of the fourth partition 230d.

At this time, the thickness t ₃ of the dielectric layer 12 of the B subpixel 210c is formed on the first partition 230a and the fourth partition 230d.

In addition, the thickness t ₂ of the dielectric layer 12 of the G subpixel 210b is formed in the first partition 230a, on the second partition 230b, and on the third partition 230c.

In addition, the thickness t ₁ of the dielectric layer 12 of the R subpixel 210a is formed in the first partition 230a and the second partition 230b.

Above As described above, the thickness of the dielectric layer of the R subpixel or the thickness of the dielectric layer of the G subpixel is greater than that of the B subpixel and the height of the partition wall defining the R, G, and B subpixels on the rear substrate is different. As a result, the color temperature of the B subpixel having a relatively low color temperature is compensated. In addition, the effect of increasing the luminance can also be obtained.

2B is a view showing a second embodiment according to the present invention. As shown in FIG. 2B, as shown in FIG. 2A, a scan electrode 16A and a sustain electrode 16B are formed on the front substrate 10 to maintain light emission of cells by mutual discharge in one pixel. do.

At this time, the scan electrode 16A and the sustain electrode 16B made of the transparent electrode 16a and the bus electrode 16b are formed in pairs.

At this time, the scan electrode 16A and the sustain electrode 16B are covered by the dielectric layer 12 which limits the discharge current and insulates the electrode pairs.

In this case, the thickness t of the dielectric layer 12 formed on the front substrate 10 is different for each of the R, G, and B subpixels 210a, 210b, and 210c, and the dielectric layer 12 of the B subpixel 210c is different. The thickness t _{3 of} ) is the thinnest.

That is, the thickness t ₃ of the dielectric layer 12 of the B subpixel 210c is 25 μm, the thickness t ₂ of the dielectric layer 12 of the G subpixel 210b is 35 μm, and the R subpixel 210a is provided. The thickness t ₁ of the dielectric layer 12 is 45 um.

At this time, one or more of the R subpixel 210a or the G subpixel 210b includes the blue dielectric layer 12a, which is used to substitute the blue dielectric layer 12a to the R subpixel 210a or the G subpixel 210b. In this case, the color temperature of the R subpixel 210a or the G subpixel 210b is lowered to compensate for the color temperature of the B subpixel 210c having a relatively low color temperature.

Of course, the blue sublayer 210a is included in the B subpixel 210c having a low color temperature. Formation can compensate for further improved color temperature.

On the other hand, the partition wall 230 formed on the rear substrate 20 is the first partition 230a, the second partition 230b, the third partition the same height for each of the R, G, B subpixels (210a, 210b, 210c). 230c, the fourth partition 230d.

In this case, the thickness t ₃ of the dielectric layer 12 of the B subpixel 210c may be formed on an upper portion of the first partition 230a, an upper portion of the second partition 230b, an upper portion of the third partition 230c, and an upper portion of the fourth partition 230d. It is formed on the top.

In addition, the thickness t ₂ of the dielectric layer 12 of the G subpixel 210b is formed in the second partition 230b and in the third partition 230c.

In addition, the thickness t ₁ of the dielectric layer 12 of the R subpixel 210a is formed in the first partition 230a and the second partition 230b.

Above As described above, the thickness of the dielectric layer of the R subpixel or the thickness of the dielectric layer of the G subpixel is greater than the thickness of the dielectric layer of the B subpixel on the front substrate, and the height of the partition wall partitioning the R, G, and B subpixels on the rear substrate is the same. By doing so, the color temperature of the B subpixel having a relatively low color temperature is compensated. In addition, the effect of increasing the luminance can also be obtained.

As such, the technical configuration of the present invention described above can be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention. Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended 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 has the effect of improving the luminance and color temperature by varying the thickness of the dielectric layer formed on the front substrate of the plasma display panel.

Claims (6)

In the plasma display panel, a dielectric layer formed on the front substrate is formed on the partition wall of the rear substrate, and includes a partition wall partitioning the R, G, B subpixels And a thickness of the dielectric layer is different for each of the R, G, and B subpixels. The method of claim 1, And the thickness of the dielectric layer of the B subpixel is thinnest. The method of claim 1, The thickness of the dielectric layer of the B subpixel is 25um, The thickness of the dielectric layer of the G subpixel is 35 um, And the thickness of the dielectric layer of the R subpixel is 45 um. The method of claim 3, wherein At least one of the R subpixel or the G subpixel comprises a blue dielectric layer. The method of claim 1, And the height of the G subpixel partition walls is the same among the heights of the R, G, and B subpixel partition walls. The method of claim 1, The partition wall is a plasma display panel, characterized in that the same height of the partition wall.

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